Drake isn’t forgiving or forgetting when it comes to his beef with Kendrick Lamar … encouraging fans to keep on dissing his rap adversary while they chanted an NSFW phrase about him.

The rapper took the stage at Rockstar Energy’s Wireless Festival in London Saturday … rocking Finsbury Park — and, his fans showed their love by screaming out “F*** Kendrick.”

Drake basks in the glow of the roast for a moment before telling Chubbs, who’s Drake’s head of security and is waiting in the wings, “Grab me a shot. I’ll drink to that.”

The song won multiple awards at the Grammys … and, a whole room full of Drake’s peers sang the song while KL walked onstage to collect his award.

BTW … photos from Wireless Fest last night also appear to show Drake’s covered up a tattoo of LeBron James — who seemingly sided with Kendrick in the whole beef — with a tattoo of Thunder player Shai Gilgeous-Alexander.

He also changed the lyrics in his hit song “Nonstop” a few months ago to reflect their falling out, and he ran the lyric change back in London.