And thousands more fans are packing into Lower West Stand at the Amex to watch the six-pointer on "beam back" on big screens.
The Seagulls came close to levelling the scores just before the hour mark, as Glenn Murray stretched to get his foot on Kayal's looping cross towards the far post, however his effort went narrowly wide of Hennessey's right-hand post.
The stakes could hardly be higher for Palace with Tottenham, Manchester United and Liverpool having all scored late winners in the last three matches at Selhurst Park while, perhaps even more damagingly, three points became one at Bournemouth last Saturday after Josh King's last-minute equaliser for the Cherries. The Eagles have been hindered by notable injuries over the last few months and the recent return of influential attacker Wilfried Zaha is a welcome boost. The Seagulls look close to safety and may only need a couple of points to ensure a second consecutive season of top-flight football.
Fourth bottom Palace now boast a precarious three-point advantage from the relegation places, but have played a game more than Southampton, who are directly below them. Brighton were beaten at Everton and at home to Leicester before being held by Huddersfield in a 1-1 draw last week.
However, as the game entered the final 10 minutes, Benteke was needed to make more of an impact in defence from set pieces as Brighton began to up the tempo in the final third.
Crystal Palace are [1.95] favourites and it is hard to argue with this. Three points against Palace will be vital for their survival. But there are other ways to increase the price on a Palace win and potentially add some value.
Chris Hughton has warned his Brighton players to keep their cool in the heat of Saturday's showdown with Crystal Palace. A striker whose goal ratio was better than one in two during his four years at Selhurst Park has not lost any of that prowess in the twilight of his career, with his 11 league goals not only proving invaluable to Brighton's hopes of staying up but even leading to suggestions of a first England call-up at the age of 34.