Preheat the oven to 450°. Heat a large ovenproof skillet until very hot. On a plate, rub the roast all over with the soy sauce and then with 1 tablespoon of the olive oil; season with salt and pepper. Add the roast to the skillet, fat side down, along with any extra oil from the plate. Cook over moderately high heat, turning occasionally, until browned all over, 4 minutes. Turn the roast fat side up and roast in the oven for 25 minutes, or until an instant-read thermometer inserted in the thickest part of the meat registers 115° for rare. Transfer the roast to a carving board to rest.