Unless you both are very open minded and have agreed to not agree on some topics, then perhaps it could work out. But usually its doomed for failure. There are just some heated deep rooted areas that are deal breakers and better to discuss them up front then to pay the price after the fact and waste each others time.

Live and let live attitude rest is caring for each other

Shit, people give tons of advice on what it takes to make relationships work when you agree on spiritual matters and you can see how dismally that usually works out.

So I'd have to guess there isn't any advice on how to do it, so the best advice would be to run for your fucking life away from it.

If you're not an antitheist, you have a better chance of making it work.. I've gone to church functions a couple times because my bfs family is religious but him, not so much.. At home, we don't discuss religion because we don't want to...