Place broccoli in a large bowl. Combine lemon juice, oil, salt and pepper; drizzle over broccoli and toss to coat. Let stand for 30 minutes. Advertisement Toss broccoli; drain broccoli, discarding marinade. Place cheese in a small shallow bowl. Add broccoli, a few pieces at a time, toss to coat. Prepare grill for indirect heat using a drip pan. Place broccoli over drip pan on an oiled grill rack. Grill, covered, over indirect medium heat for 8-10 minutes on each side or until crisp-tender. If desired, garnish with grilled lemon slices and red pepper flakes.