(My intention is not to give proof of authenticity of Quran, but to help the atheist and non-Muslim what are the possible way they can prove it wrong with logic and fact.)

Many people especially atheist and non-Muslim have been trying to prove that Quran is wrong and therefore it is not the word of God. According to them, It was written by someone called Muhammad in some 1400 years back. Even though tons of proof were given to them to show its authenticity, they deliberately deny. There is a trend now a days in Bangladesh that if you take your stand against Quran, you become somehow famous, celebrity etc. To gain fame and show off how knowledgeable they are, they constantly attacking Quran. But, the problem is that if you ask them show me proof that Quran is wrong, instead of giving concrete proof they talk so much in vain. And at the end, you will find Its not the fact but its their belief they are talking. Well, just someone belief that Quran is wrong, is not good enough to prove it wrong. You must come with proof

There are some hypocrites who finds anything that goes against them in Quran says its not the word of God. A perfect example is the issue of women. Some hypocrite may says since Quran gives authority of man over women, this is not the word of God. I don’t need to answer it here, but it is something equivalent to their claim that since his/her father (The person) does not give him exact equal amount of money/dress/food in an occasion, the person is not his/her father- a hierocratic approach.
So, for all of them who want to prove Quran wrong, may try to do the followings:

The single biggest chance to completely destroy Islam was over:
Prophet Muhammad (s) had an uncle by the name of Abu Lahab. This man hated Islam to such an extent that he used to follow the Prophet around in order to discredit him. If Abu Lahab saw the Prophet (s) speaking to a stranger, he would wait until they parted and he would go to the stranger and ask him, "What did he tell you? Did he say, 'Black'? Well, it's white. Did he say 'morning'? Well, it's night." He faithfully said the exact opposite of whatever he heard Muhammad (s) and the Muslims say. However, about ten years before Abu Lahab died, a little chapter in the Quran (Surah al-Lahab, 111) was revealed about him. It distinctly stated that he would go to the fire (i.e., Hell). In other words, it affirmed that he would never become a Muslim and would therefore be condemned forever. For ten years all Abu Lahab had to do was say, "I heard that it has been revealed to Muhammad that I will never change - that I will never become a Muslim and will enter the Hellfire. Well, I want to become Muslim now. How do you like that? What do you think of your divine revelation now?" But he never did that. And yet, that is exactly the kind of behavior one would have expected from him since he always sought to contradict Islam. In essence, Muhammad (s) said, "You hate me and you want to finish me? Here, say these words, and I am finished. Come on, say them!" But Abu Lahab never said them. Ten years! And in all that time he never accepted Islam or even became sympathetic to the Islamic cause.

Since this unique chance is over, how you can prove it wrong now? Don’t worry there are some other challenges still remains to make Quran wrong.


Find contradiction:
For the benefit for you, to ease the task of you. A perfect example of how Islam provides man with a chance to verify it authenticity and "prove it wrong" occurs in the 4th chapter. And quiet honestly, I was very surprised when I first discovered this challenge. It states:
"Do they not consider the Quran? Had it been from any other than Allah, they would surely have found therein much discrepancy." (4:82):

This is a clear challenge to the non-Muslim. Basically, it invites him to find a mistake. This is 1400 years back challenge that awaits to be true. This is a test given in Quran. So apply it to any book that claims to be word of God. No book that claims to be word of God has such kind of expression in the face of earth except Quran. So, find contradiction and prove it wrong. Isn’t very easy task for atheist or non-Muslim?

Bring a chapter like this:
Quran repeatedly if it is not from God, bring a chapter like this. So, all you have to do write a chapter similar to Quran and make it wrong. See, how Allah make task easy for you. Start doing right now.

People of the Book:
An interesting example of the latter type of falsification tests contained in the Quran is the verse which mentions the relationship between the Muslims and the Jews. The verse is careful not to narrow its scope to the relationship between individual members of each religion, but rather, it summarizes the relationship between the two groups of people as a whole. In essence, the Quran states that the Christians will always treat the Muslims better than the Jews will treat the Muslims. Indeed, the full impact of such a statement can only be felt after careful consideration of the real meaning of such a verse. It is true that many Christians and many Jews have become Muslims, but as a whole, the Jewish community is to be viewed as an avid enemy of Islam. Additionally, very few people realize what such an open declaration in the Quran invites. In essence, it is an easy chance for the Jews to prove that the Quran is false - that it is not a divine revelation. All they have to do is organize themselves, treat the Muslims nicely for a few years and then say, "Now what does your holy book say about who are your best friends in the world - the Jews or the Christians? Look what we Jews have done for you!" That is all they have to do to disprove the Quran's authenticity, yet they have not done it in 1400 years. But, as always, the offer still stands open!

A final comment:
So, out of the four chances to prove Quran wrong, one is over, but still there are three ways to prove it wrong as mentioned above. So take these opportunities and establish your claim.
Don’t say anything in vain just because:
1. you don’t like it personally
2. you feel its command goes against your behavior
3. It goes against your lust/ desire
4. You feel it goes against your right
5. You want to become popular.