Lampard savoured the result as one of the most special of his 11 years with the west London club.
"It's one of the finest moments I've felt in a Chelsea shirt," he said on Sky Sports 2. "It was backs to the wall. I know we dug in and people want to see beautiful football, but with 10 men for 50-odd minutes or whatever it was, to perform like that was unbelievable.
"That clock wasn't half slow in the second half! You know they're liable at any moment because of the players they've got in their team but there's a determination about us and you get what you deserve.
"We were all in it together and we dug in."