Wash your hands and clean your preparation and grill area.
Warm a grill to medium-high heat.
While grill is preheating, season steaks with salt, pepper and garlic powder.
Place steaks on warm grill. Turn steaks every 4 minutes and cook to your liking. Using a food thermometer, make sure the internal temperature of the steaks reach a safe minimal internal temperature of 145° F or 145 degrees Fahrenheit.
Warm tortillas on the grill away from the cooking steaks and keep warm in aluminum foil.
Remove from the grill and slice into thin strips about ¼ of an inch thick.
Fill each tortilla with steak, onion, cilantro, and top with a squeeze of lime juice.
If you are looking for additional flavor, try topping with fresh tomatillo salsa!