The Israeli has been under the spotlight following Jose Mourinho's exit but he underlined his side's commitment.
He told Sky Sports Xtra: "You saw the attitude in the last two weeks, it has been difficult, but it was good. I keep telling you I'm very happy with the attitude."
Victory took the Blues to the top of Group B and Grant continued: "Very good, it's nice to be at the top.
"We came here to win the game.
"I think we want to do it and in the right way. To come back from 1-0, the second half we dominated, I'm happy."