If you ever attempt to share your faith with atheists, many of them will try to use the argument that Christianity is evil because Hitler was a Christian. Mariano's blog Atheism Is Dead has many resources refuting this farce. And this particular article is one of those In this one, Mariano lists several quotes that are used to make Hitler sound like if not a Christian, then a theist. Check it out because soon Mariano is going to unpack each one and show that Hitler was not saying what people thing he is saying.
Atheism is Dead: About.com, Austin Cline, Adolf Hitler and the Continued Promulgation of Nazi Propaganda, part 3