Atlas Shrugged is has really nothing to do with religion and god, but with of a free market as opposed to crony capitalism.
As far as her religion, she was an atheist and I do not agree with her on that. Most likely the real god you speak of is not the one I believe in, but that has nothing to do with what is being discussed here. There is really no point in discussing our religious differences, because I fully understand your commitment to what you believe and that makes it impossible for you to understand mine.
I used the term ‘god’ simply because it far better describes the way Rand’s followers view her. They eschew the realities of Rand, in favor of post mortem romantic visions.