As an atheist, you probably see the lack of scientific evidence as proof there are no gods. However, religious people use their faith, historical writings and their inner feelings as evidence to support their beliefs. No matter how you debate your views, your adversary will use their faith to reject all your arguments.
You can level the religious debate playing field by having faith in the God-eating Cosmos-creating Zebracorn.
By using your faith, historical writings and your intuition, you can justify the existence of the God-eating Cosmos-creating Zebracorn. Any argument used by religious people to attack your faith can be used back at them. If your antoganist insists that his beliefs are more valid than your beliefs, you’ll be able to clearly identify their hypocrisy.
Alternatively, if your god-fearing adversary decides the path of mutual respect for each other’s beliefs, you can move on to the more important debate.
Has or hasn’t the Zebracorn eaten their god.
If there is no proof that their god has performed any miracles or spoken to anyone for centuries, that lack proof is the strongest evidence that their god (or gods) has retired, has returned to the Zebracorn to be eaten and has returned to the Zebracorn’s imagination.
In the book of Meifeng, the Zebracorn states “When a god gets too tired and too sad to continue working, the god comes to me to be eaten. I eat them so they can go back into my imagination where they came from.”