Arsenal goalscorer Bukayo Saka to TNT:
"This feels like a massive win.
"We heard the fans celebrating out of nowher during the game so l sort of knew in my head that something had gone well in the other game.
"But we are just focused on ourselves."
Brighton boss Fabian Hurzeler has called for action against Arsenal.
It's unclear what specifically the Brighton boss is aggrieved about.
"The Premier League needs to find a rule," he told TNT.
"Give more yellow cards for timewasting. Have you ever seen a goalkeeper go down three times in a game?"
Sky Sports' Sam Blitz at the Amex Stadium:
"Arsenal fans are currently singing: we're GOING to win the league. That's a huge shift from just: we are top of the league.
"I believe that's the first time that chant has been sung this season - no matter how many days Arsenal have spent at the top of the table.
"It shows how big a night this is. Arsenal have eight games left and have a seven-point lead at the top. This is a night that has confirmed Arsenal can be robust when it matters - and City are not the team of old."
Sky Sports' Sam Blitz at the Amex Stadium:
"How the picture changes: when everyone was talking about Arsenal's durability - it's Man City slip up on a night when the Gunners were robust.
"Gabriel and Hincapie were superb on a night when Arsenal's attackers were limp - and no Saliba due to injury. Declan Rice excellent in a week when he was injured.
"Remember, City have a game in hand so Arsenal's lead could effectively be four. But this feels like a seismic shift in the title battle."
IS THIS THE BIGGEST WIN OF ARSENAL'S SEASON?
And a massive cheer from the Arsenal fans as the full-time whistle goes at Man City.
City have drawn - Arsenal have WON! And it wasn't pretty. Two shots on target all game. Brighton the better team.
SEVEN points clear at the top of the Premier League.
Sky Sports' Nick Wright at the Amex Stadium:
"Palpable tension inside the ground. It's edgy and frantic on the pitch as Brighton push for a leveller. Raya has been superb for Arsenal after that early error that nearly gifted the hosts an opener. Into the final few minutes of stoppage time..."