It could have been very different had the hosts been handed a penalty following an incident between Konate and Bradley Barcola.
No penalty nor red card were initially given, while Konate was also given a reprieve upon a VAR review.
Meanwhile, PSG coach Luis Enrique remained tight-lipped as he added: "I don't really like to speak about refereeing."
Slot however was full of praise for Massa and his performance during the game.The Dutchman said: "It's not easy if you are a referee in a game like this when the fans are so there for the home team.I don't feel he was in favour of us or in favour of them, I think he was a top referee in a game like this."
Liverpool and PSG will renew rivalries next week as each of them attempt to reach the quarter-finals of the Champions League.