Dybala also created Lorenzo Pellegrini's volleyed second.

"It's an important win with lots of hard work and efficiency in front of goal," said Lukaku.

Jose Mourinho's struggling side moved up to 12th on eight points from seven matches after bouncing back from an embarrassing 4-1 midweek thrashing at Genoa.

Belgian Lukaku, who returned for another spell in Italy on loan from Chelsea, added: "We're in a difficult situation, but the season is still long. We need to keep playing like that."

Mourinho said on Saturday he had no fears over his future despite overseeing the worst start of his coaching career.