Place steak in medium non-aluminum container; add lemon juice, garlic and 2 tsp. Adobo. Turn steak to coat completely in lemon juice mixture; cover. Transfer steak to refrigerator. Marinate at least 30 minutes, or up to 2 hours. Bring steak to room temperature 15 minutes before grilling; drain and discard marinade.
Prepare grill to medium-high heat, or heat grill pan over medium-high heat. Season steaks all over with Adobo. Cook, flipping once, until dark golden brown on both sides and cooked to desired doneness (about 6 minutes for medium rare).
Transfer steaks to serving platter; let rest at least 5 minutes. Thinly slice steaks. Serve with warm tortillas, beans, pico de gallo, salista and gaucamole.