Marinade beef slices in lemon, lime or calamansi juice, soy sauce, garlic, and pepper for 2 hours
Cool beef rolls thoroughly. Remove string. Carefully slice the rolled beef into half-inch thick cuts making sure the stuffing is intact. Arrange slices neatly on a platter. Heat sauce with potatoes and olives . Pour sauce over slices and garnish with the potatoes and olives. Serve warm.