If steak has fat around edges, be sure to score them first with a knife. Place the steak into a shallow baking dish. Combine all ingredients to make the lemon marinade and pour over steak. Allow to sit in the refrigerator for at least 4 hours so the marinade has a chance to soak in. Grill steak to your preference on an outdoor grill, adding leftover over marinade during cooking to maintain tenderness.