The best way to deal with it is to remain open-minded to that which you don't believe.
If you shut it all off, you'll become one of those contemptuous radical atheists and isolation will soon follow.
Hell, I'd even recommend going to church, reading the bible, etc.
Christopher Hitchens is a great example of someone that had strong opinions against religion, but was very civilised and had many deeply religious close friends, because he took advantage of his capacity for humour and wit, I think that's a great source of coping with issues like this myself.