Heat wok or large skillet over medium heat. Add oil and heat. Add garlic and onion and stir fry until fragrant and onion is just softened. Add shrimp and toss; add Roasted Chili Paste and toss with shrimp. Stir fry until shrimp is cooked through. Add fish sauce and toss. Sprinkle in kaffir lime leaf slivers. Serve.