Place the green beans, garlic, lemon zest, lemon juice, red pepper flakes, and olive oil in a bowl; stir gently and season to taste.
1 lb. green beans, ¼ cup olive oil, 1 tbsp. fresh lemon juice, 2 tbsp. lemon zest, 2 tbsp. minced garlic, 1 tsp. red pepper flakes, Sea salt and freshly ground black pepper