The two Glasgow giants are set to meet in what will be a highly anticipated encounter in the Scottish Cup semi-final on Sunday.
Former Rangers and Liverpool captain Graeme Souness has talked up the importance of the Scottish Cup semi-final old firm clash on Sunday, claiming Mark Warburton will be in for a shock when the two clubs meet.
He told BBC Sport: "I've been in Merseyside derbies and Galatasaray v Fenerbahce is a big match but nothing comes close."
Warburton, who was appointed manager at Ibrox in the summer, is yet to face Celtic but he is excited about the prospect, as reported by Sky Sports.
"I think any football fan will know and recognise that it [Rangers v Celtic] is one of the biggest derbies in world football so it's fantastic for the fans and the players to experience a game of that nature," he said.
Souness believes nothing can prepare a player or manager for a game of that magnitude and expects a fierce baptism of fire for the ex-Brentfrod boss.
The Sky Sports pundit won three league titles and four Scottish League Cups in his spell at Rangers, but lost to Celtic in three consecutive Scottish Cups from 1989 to 1991, and he told BBC Sport how much those defeats hurt.
"Losing to Celtic is the worst feeling I have experienced in football," he said.
Celtic head into the semi-final at Hampden Park with a comfortable eight-point lead over second placed Aberdeen in the Scottish Premiership, while Rangers have already wrapped up the Championship title and head in to the game on the back of just one defeat in 20 games in all competitions.