Heat gas or charcoal grill. In small bowl, mix soy sauce, maple syrup, lemon juice and garlic. Reserve 2 tablespoons soy sauce mixture in small container. Place remaining mixture in 1 1/2-quart saucepan. Heat to boiling over medium heat. Reduce heat to low. Cook 2 to 3 minutes or until reduced to 1/4 cup. Remove from heat; set aside.