I take a different route: Once they go religion on me, I just say that
*"Your Religion is yours, Mine beliefs are mines, and my beliefs are not yours: Thus My beliefs are Not Subject to Debate".
Then I walk away.

I try to be respectful of the beliefs of others. That said, I do not willingly patronize businesses with obvious religious ties - be it their own belief, or to support a religious organization.

About 3 minutes worth

This makes me grind my teeth. I may not patronize that business just because I feel they are pushing their religion at me. I don’t even like bumper stickers on cars and the ‘Jesus is the answer’ signs in people’s yards.

Extremely. It's like they're falling back on that to compensate for lack of ability. It also makes me think it is a "trust shield" to keep you from suspecting any crookedness.