What is a recipe for rib eye steak dry rub?

To be safe, if you are serving guests, none. Or at most, a bit of salt. Besides regular table salt, you could use kosher salt or sea salt.

Other spices that would go well may depend on your tastes. A little pepper would be the next suggestion. There are some ready-made spice mixtures, some of which contain powdered smoke flavoring, meat tenderizer and so on. Ground coriander seed can give grilled meats a nice boost in flavor sometimes.

The tenderness and flavor of a rib-eye steak make it ideal for grilling as-is. Let your coals burn down, and don't let it cook over actual flame. The meat will pick up a nice smokey flavor.

Addition: Salt, pepper, and high heat. If I am cooking for more than just my family I simply salt and pepper the steak. You want your steak to be room temp before placing on the grill. I cook my steaks at the hottest point of my grill to seer in the juices and get the blackened carmelization on the outside of the steak. After cooking I sprinkle with sea salt. One suggestion for all is do not serve your steaks directly off the grill. Remove the steaks from the grill and allow them to stand for a short period and redistribute it's juices throughout the meat. If I am cooking for myself I like a more robust season so I have a steak shake that is mainly salt, a little red pepper, garlic, tenderizer, and mint.