"There's only one special one," he joked. "But this was special against Liverpool. They are a fantastic team and Rafa played tactically. You need to be clever against him but we did it.
"We have created history and I am very proud we did it my way. But I don't like to say 'I' because (owner) Roman (Abramovich), he created this club, my staff are excellent, my assistants, everybody."
Grant, who has guided his team to a strong end-of-season charge on two fronts, also praised Frank Lampard's efforts in trying times.
"Frank played very well and in my opinion was one of our key players today. It is not an easy thing, he is under... you know what he is under.
"He gave everything to the team."