The home team had been frustrated for large parts of the game, but were able to get ahead finally thanks to an excellent Mbappe strike.
Thomas Tuchel's men were looking for a second goal to put the game even further out of the reach of Lille, and turned to their two star men to provide that.
Neymar picked up the ball on the left side of the pitch in typical, direct styel, and played a nice one-two with Mbappe.
The Brazilian then drove further in to the box, before unleashing a shot that defelcted off a defender and left Maignan in the Lille net without any chance of saving it.