The European champions went behind after just seven minutes through a looping Wesley Sonck header, but they gradually fought their way into the came and drew level on 36 minutes.
Iniesta ghosted in between two defenders to latch on to Cesc Fàbregas’ through-ball before he rounded the Belgian goalkeeper, checked onto his right foot and curled in a sweet shot from the tightest of angles.
It was, according to the Barça man himself, one of his best strikes.
He gushed: “The move happened very fast and I had only a few seconds to react. I saw that the goalkeeper was waiting for me to pull the ball back so I decided to dribble around him.
“All the goals are important, but this one was great because of the collective build up and for the way I finished it and it’s definitely one of the best goals of my life,” he added.
The 24 year old was then asked to analyze the match itself: “We had to concentrate one hundred percent right from kick off and we could not relax.
“It was a very intense game and we had to fight very hard to earn the win. It’s another important step towards the World Cup,” he concluded.