The win was secured with two goals in three first-half minutes from StefanoOkaka Chuka and Simone Perrotta, following succesive draws in Serie A and defeat to Basle in their first European outing.
StefanoOkaka cushioned the ball into the path of De Rossi who drilled it in the bottom corner with a smart left-foot finish as Blazej Augustyn and Giuseppe Bellusci were sent off for the visitors.