The garnish of tomato and cucumber slices adds freshness to this rich spicy dish, which should be served with plenty of fresh vegetables. Thoroughly mix together all the marinade ingredients. Combine the shrimp with the marinade and set aside to marinate for 10 minutes. Heat a medium skillet, add the oil and saute the marinated shrimp for 4 minutes. Remove to a serving plate and garnish with the tomato and cucumber.