Hazard and Oscar have shone to help guide Chelsea to the top of the Premier League table, with the Blues still unbeaten after six matches.
Cech believes that a string of new signings is helping Roberto Di Matteo's side change their style to great effect.
The Czech international told FIFA.com: "Our style has evolved and we're trying to bring more dynamism to our attacking moves thanks to the talented players we have further forward.
"So far, Hazard's arrival has done us a lot of good. He's quickly built an understanding with the players around him, like Juan Mata and Oscar, and it's really pleasing to see a player come in from another league and adapt so quickly.
"As for Oscar, I'm very happy for him because it's not easy to just show up here from Brazil, where the championship is completely different.
"His double against Juventus showed that he fully deserves his place here and it'll give him lots of confidence for the future."
Chelsea continue the defence of their Champions League title in midweek with a trip to Danish champions FC Nordsjaelland.