Religion doesn't come into it. Normal people don't develop their morals from religion and thus it hasn't significantly impacted on what is considered 'evil' and 'good'. I consider religions definitions of 'good' and 'evil' to be metaphors, open to interpretation, and therefore it doesn't deserve any special consideration with regards to the development of morals.
I’m sure if you asked the majority of Americans, for example, where they gained their concept of morality they would say they got it from religion. I would find it hard to believe that anyone, even atheists, in the U.S. sense of morality was not affected in some way by religion.