Inter Milan are bidding to hoist their first Scudetto since the 2009/2010 season and Lukaku has admonished his side to be focused.
The Nerazzurri secured another important maximum points at home thanks to goals from Lukaku, Matteo Darmian and Alexis Sanchez.
The Belgian put the hosts ahead in the first minute of the game with his 18th Serie A goal of the season, before he set up former Manchester United defender Darmian for the second goal inside 69 minutes.
Chile superstar Alexis sealed Antonio Conte’s men’s victory ten minutes later.
“We are improving, we are on top of the table, it’s a nice feeling, but we must continue,” he told Sky Sport Italia.
“We faced some defeats in these kind games last season and we want to improve. I am really happy with the victory. Now we must focus on Parma, it’s not going to be an easy game,” he continued.
“We want to show our opponents that we are here. We must focus on one game at a time. It was an important match after two back-to-back victories.”
“We scored three goals and kept a clean sheet, perfect.”
“I always want to improve, just like many other players: Barella, Bastoni, Skriniar, De Vrij. We are young and we have room for improvement. We want to win these games, it’s a good feeling.”