A 44-year-old man was assaulted by a group of teenagers inside his convenience store. Cops said that on Nov. 21 at 7:18 p.m., a large group of teens came into the store, at 101 W. 109th St. and Columbus Avenue. One asked the cashier for a philly. When the cashier requested ID, the teen allegedly hit him in the face with a blunt object while the rest of the group trashed the store. Witnesses saw the teens run into an adjacent apartment building, at Columbus and 109th.