Heat the olive oil in a saucepan over medium heat. Add the garlic and chillies and cook for 2 minutes or until aromatic. Increase heat to medium, sauté the prawns and cook for a further 3 minutes or until the prawns curl, change colour and are just cooked through.
Stir in the parsley and season with salt and pepper. Add the drained pasta in pan along with rocket and lemon juice. Toss together gently. Serve with parsley. Serve immediately.