He added: “I was always impressed when I saw Liverpool at Anfield, when we beat them 4-1 and, in the last 10 minutes, Anfield was singing for that team. I was impressed.
“With Chelsea, I think this is my moment. It was amazing. The club should be proud of their fans.
“I can only thank them by giving everything I have, to thank them for this reaction.
“To win after conceding a goal with 15 minutes to go, it’s important… it’s something I spoke about with the players. When the difficult moment arrives, face the difficult moment. Don’t collapse.”
Kiev coach Sergei Rebrov admitted his side should have been aware of Willian’s qualities from the midfielder’s time at Shakhtar Donetsk.
He said: “It doesn’t matter to me that it was a former Shakhtar player. We knew he’s a good player of a high level, and we knew how good he was at free-kicks.”