Found 2 wires hanging below shingles against foundation

The safest thing to do of course is turn off your main and treat it as an emergency, make an emergency call to a licensed electrician. Nobody could rule out from what's provided that these wires are unsafe.

My personal opinion, it's such a remote chance that this is an imminent danger, I'd have someone that's competent to work on basic wiring check it as soon as possible, but I wouldn't make it an emergency service call to an electrician.

With no bare conductor exposed, there's really nothing DIY for you to do.

There's a real chance these wires are just some scrap that got buried.

If they are connected to your electrical system, it's obviously not code compliant; but then again it must have been there for a long time, so it's not likely there's anything that's going to happen today.

Again I am not assuring you there's no hazard, just saying what I would do if I were in your shoes.