Immediately after the restart, Imrie had a penalty claim waved away when Duberry appeared to clip his ankles inside the box, but referee Mike Tumilty was having none of it.
Bell made it 4-2 with a great shot from the edge of the box and then Dallas burst through to clip the ball in with his left foot for the home side's fifth.
Irish debutant Conor Henderson - another ball-playing midfielder - probed for a gap through the back-line and the 19-year-old's deflected pass was pounced on by Tomas Rosicky, who sped to the byeline to clip a square ball through the legs of Charlie Daniels across the box.