Where do you draw the line on taking offence? What should it matter to you if someone makes light of your religion?
Is it really worth taking it personally when someone makes jokes about your religion? All the major religions really preach forgiveness, do unto others as you would have done unto you, etc... So, the question is -- why take it personally? If you are a spiritual person, no matter what you believe in, what others say about it or think about it is THEIR belief; however misguided you might deem them. The best you can do to uphold your dignity, or defend your religion, is be the better person. Your faith should be your beacon -- not the political system installed by MAN that is the institution of religion itself.