Yeah, there are still some Christian fundamentalists out there who make such silly arguments against Islam.
The Christians who do make such a claim do expose their own ignorance of Islam and Christianity. This is because whenever a Muslim intends to read the Quran he/she will seek refuge from the Devil and if we look into the Quran we realise that the Quran in chapter 2 and verse 168 teaches us that the Devil is an enemy to mankind: 2:168. O ye people! Eat of what is on earth, Lawful and good; and do not follow the footsteps of the evil one, for he is to you an avowed enemy.
So the obvious conclusion we draw from this knowledge is that the Quran is not from the Devil as the devil would not teach such teachings. The Christian may continue to make this claim despite this information, if this is the case then the humiliation and exposing of a lack of knowledge on the part of the Christian who makes this claim continues as the Muslim can easily point to the misery that alcohol causes mankind (including the misery that is Fetal Alcohol Syndrome). Christianity allows the drinking of alcohol while the Quran forbids the consummation of alcohol. Fetal Alcohol Syndrome (FAS) occurs "when a woman drinks alcohol during pregnancy, she risks giving birth to a child who will pay the price — in mental and physical deficiencies — for his or her entire life". Some of the symptoms of Fetal Alcohol Syndrome affecting the child are delayed development, organ dysfunction, failure to thrive, facial abnormalities and can lead to mental helath problems and troubles with the law in later life.
Why is all this relevant to the Quran? Well, the Christian claims that the Quran is from Satan yet the Quran has saved millions of children from this horrendous disease while the Bible has not. So this is further humiliation and refutation poured upon the mindless claim of the missionaries.
The question to ask them is; how did the Quran (which they say is from Satan) save millions of children from Fetal Alcohol Syndrome (and from other alcohol related diseases) while the Bible (which they believe to be fully from God) allowed the drinking of alcohol and thus did not prevent Fetal Alcohol Syndrome to affect millions of children?
On top of this, use some stats too. Statistically, Muslims have the least sex outside of marriage. Surely, if some group is following something from Satan then they would feature prominently in stats for sexual sins:
Muslims Have Least Sex Outside of Marriage (Least Fornication and Adultery By Muslims)
And we also see Muslims are up there for giving charity too:
Muslims give the most charity and have least sex outside of marriage!
Here's a fundamentalist Christian, the son of an infamous Islamophobe, getting refuted:
Christians and the 'Mahound' Lie About Prophet Muhammad p
Dr Yasir Qadhi: The Distortion that Prophet Muhammad 'Robbed Caravans'
Did Prophet Muhammad Have Epilepsy? No. Dr Yasir Qadhi
Russell Brand Exposes Muslim Terrorism Percentage
What does Awliya mean in Quran 5:51
Noam Chomsky: Barack Obama's Most Extreme Terrorist Campaign in Modern History
Christians Believe Jesus Approved of Hand Chopping
Dr Yasir Qadhi: The Distortion that Prophet Muhammad 'Robbed Caravans'
Did Prophet Muhammad Have Epilepsy? No. Dr Yasir Qadhi
Russell Brand Exposes Muslim Terrorism Percentage
What does Awliya mean in Quran 5:51
Noam Chomsky: Barack Obama's Most Extreme Terrorist Campaign in Modern History
Christians Believe Jesus Approved of Hand Chopping