I'm in the US and I try to avoid the subject as much as possible with people who aren't my close friends.
Our neighbors are deeply religious, they've invited me to go to church with them and read the bible together. I just decline politely without adding an opinion.
The wife seems to be a crackpot, I avoid her like the plague. She's a Hispanic immigrant but has made some racist comments to me about black people. She also believes some batshit crazy right wing garbage... well, I think the whole family does.
The most annoying thing they do is every week they go to multiple food banks; which is fine, I don't judge. But the wife is a hoarder and they don't have room for the new food. Their solution? They give their old food to us. We get cans of food that's rusty and expired, one bag of rice even had bugs in it.
We've tried politely telling them we don't want or need their food, but they show up every week at our door with it. We just throw it away. But what's the point? She doesn't want to feel like she's wasting food, wants to do a "good deed," and passes her literal garbage onto us?
Other than that, I don't really have many religious people in my life. Maybe some relatives but they aren't deeply devout; I prefer to talk about other things with them.
Once in awhile we get Jehovah Witnesses knocking on our door, but we just tell them we're not interested. I'd love to be a fly on the wall and see what kind of conversation they have with the crazy neighbors, they're 7th Day Adventists. And the JW's are usually a group of black ladies. Do they duke it out on who loves Jesus more? Have a prayer huddle?