In large mixing bowl add all ingredients, and mix until combined thoroughly.
Scoop approximately 1/4 cup tuna mixture. Invert onto work surface; gently pat into a 3/4-inch-thick patty. Repeat with remaining tuna mixture.
Heat oil in a large skillet over medium. Once hot, add tuna cakes to pan in batches; cook 3-4 minutes on each side, until bottoms are golden.
Make sauce: Place red peppers, mayonnaise, lemon juice, garlic, and spices in blender and blend on high until combined. Pour into serving container and add herbs.
Serve tuna cakes hot with sauce, or cool and store for later use.