I think my first reaction would have been to say "Don't look!" followed by "You have a very curious and extreme interpretation of the Koran."
Any further escalation "Talk to the hand or sort it out with the CC!"
I flew for a Persian Gulf airline for four years. We served al cohol and I never heard of any such problems.
I do recollect feeling a little self conscious when, as a passenger, I tucked into lunch during Ramadan with a chap reading his Koran next to me. He noticed my embarrassment and said "Don't worry; this is good for me." or words to that effect.
I think al cohol man was a bit of a prat - they are always with us in all cultures.