When I first started in the rooms, my God was a Group Of Druggies. Try to remember that it's a spiritual philosophy, not about religion or here..this is what I ask people I sponsor when they are unsure about what to believe in, "Can you just believe that I believe in something? Something that keeps me sober one day at a time?". If you focus too much on the RELIGION thing and how you are an atheist, the recovery will pass you by without your even knowing it.
Just fake it till you make it.....you'll get there.