Place shrimp in a medium bowl and toss with lime juice, 1/4 cup cilantro, half the garlic, 1/4 teaspoon salt and 1/4 teaspoon crushed red pepper. Cover and let marinate in the refrigerator for at least 20 minutes.

Heat oil in a large skillet over medium-high heat. Add the shrimp, marinade and remaining garlic; cook until the shrimp are just cooked through, about 5 minutes. Remove from heat; add the remaining 1/4 cup cilantro, 1/4 teaspoon salt and 1/4 teaspoon red pepper. Toss to combine. Serve over rice or pasta.