Place your thinly sliced lamb in a bowl. Then, add the shawarma spice blend, Greek yogurt, lemon juice, 2 tablespoons olive oil, and minced garlic.
Give the meat a good stir making sure it’s all coated. Cover the bowl and place it in the fridge for at least 2 hours or overnight for best results.
Heat the remaining 1 tbsp olive oil in a pan over medium high heat. Once it's shimmery, Arrange the marinated lamb in one layer. You might need to cook in batches, please make sure the pan is not over crowded.
Cook the meat about 8-10 minutes until it's tender and fully cooked.
To assemble, place the pita/Arabic bread on a plate and top with some shawarma sauce, seared lamb shawarma, sumac onion, tomatoes, pickles and wrap tightly.