I'll be in Pryor around 11am Sunday. Where could a couple of guys get a good lunch?
You'll be done shooting at 11? If so, you'll have your pick as the church crowds won't be out yet. There isn't a lot, to be honest. There is a Chili's if you want a decent chain restaurant. The best local fare is probably the Mid-America grill. The service sucks sometimes but 11 am on Sunday, you should be golden. The famous JL's barbecue isn't open on Sunday's, unfortunately. Las Fuentes is decent Mexican food.
If you are heading back to Tulsa or OKC, you can go through Claremore and eat at Hammett House. They have some good food and great pies for dessert.