Preheat grill over high heat.

Cut 4 sheets of foil about 12 inches long. Divide shrimp, garlic, sausage, corn, and potatoes evenly over the foil sheets. Drizzle with olive oil. Add the seafood seasoning and season to taste with salt and pepper. Toss gently to combine. Top each mixture with parsley, lemon and a tablespoon of butter each.

Fold the foil packets crosswise over the shrimp boil mixture to completely cover the food. Roll the top and bottom edges to seal them closed.

Place foil packets on the grill and cook until just cooked through, about 10-15 minutes.

Serve immediately.