You know what I'm an atheist, but if I was religious and people attacked it I would not care. Why? Because it is supposed to be about FAITH. Someone making fun of me for my beliefs should just be a test of my faith. If I can't handle it or get highly offended then there is a problem. Ideally I'd turn the other cheek and say "okay, what you say won't change my beliefs" and move on.
People spend far too much time being offended over shit that shouldn't offend them. Someone bashing your religion doesn't actually hurt you unless you allow it.
All that should matter is what you believe. It makes me question a persons faith if they get riled up by someone saying anything negative about it.