Nobody at the higher levels of the leadership was a practicing Christian in any traditional sense. Hitler, Goebbels, and Himmler were raised Catholic, but were non-practicing by early adulthood. Himmler was openly neopagan as an adult. I think Goebbels mostly worshipped Hitler. Goering was raised Lutheran.
The man who tried to kill Hitler, Claus von Stauffenberg, was a Catholic. There is evidence that he was working both with British intelligence and with the Vatican.
I didn’t suggest Nazis were practicing Christians in any form. As I noted, they believed Jesus was an ordinary mortal. Some Nazis had a Catholic background, some Protestant. There was what I call a “cultural Christianity” in Germany, but that didn’t have anything in it to withstand/resist the Nazis.