"It feels really good", Loftus Cheek told BT Sport after he became the first Chelsea player to score a hat-trick in Europe since Didier Drogba 12 years ago.
He has only made five appearances this season, with two coming in the Premier League.
Hazard has been a key figure for Sarri and Chelsea this season, cementing himself as the best player in the league.
"Chelsea only have to pick up a one injury in a key area around that central space and Loftus-Cheek is right now a player who can come into the team and I do think there has to be a bit of patience, but pushing at the training ground every day", the Chelsea women's coach told The Debate.
"I think my debut was still more special, just because you dream of that as a kid".
"He is asking me to improve defensively and positionally".
Chelsea have won all three matches in Group L as they will be traveling to the Eastern European nation to take on the Belorussian side in a return leg in two weeks. Only Kante is a defensive midfielder. "It's important to train as hard as I can to keep the fitness up and keep sharp for the times when I do come on or get an opportunity. I'm back on track and I hope I'll continue to improve, score goals and get assists".
"So first thing's first, I need to keep up the good habits - eating well, sleeping well and training well and if I keep doing that then good things will come".
Ross Barkley has only made three league starts for Chelsea this season, with Sarri's men unbeaten in 13 games since their Community Shield loss to Manchester City.
Sarri is looking for a more regular goal threat from his midfield, and Chelsea captain Gary Cahill said he was pleased to see Loftus-Cheek show he is ready to meet the need.
"I have a little problem as I have to put 11 players in the starting XI and I have 28 players". I knew then that this season was going to be my time, and that I would be more like a new signing this summer than I was in January, just because of where I was at physically.
That's the view of former Blues midfielder Glenn Hoddle, who says that he is too talented to be sat on the sidelines.