Herve Renard's side only needed a point against Graham Arnold's Iraq, and an injury-time save by goalkeeper Nawaf Al-Aqidi to keep out Hassan Abdulkareem's curling free kick ensured the Saudis confirmed their progress.

"I was expecting a lot of people but the atmosphere was fantastic, the fans pushed the players," Renard said. "Even though Salem (Al-Dawsari) got the man of the match, I think this evening it was the fans.

"It has not been easy a few months ago, but we did it and this is the most important."

The result means Saudi Arabia wins Group B of the fourth round of Asia's preliminaries, finishing level on four points with the Iraqis but ahead of its neighbour on goals scored after recording a 3-2 win over third-place finisher Indonesia.

Iraq, meanwhile, will face the United Arab Emirates in a two-legged clash next month to determine who will progress to the intercontinental playoffs, which will be held in March.

Both sides struggled throughout a tense opening 45 minutes played in front of more than 60,000 fans, with Saleh Abu Al-Shamat posing the greatest threat to the Iraqi defence as he shot over the bar in the 13th minute.

The Al-Ahli forward unlocked the visitor's defence soon after the restart when he played a perfectly weighted pass into the path of Feras Al-Brikan, the striker fizzing a ball across the face of goal from which Saud Abdulhamid shot wide.

Al-Shamat continued to cause problems for the visitor but Jalal Hassan threw himself to his left to keep out a goal-bound strike six minutes after the restart.

Hassan then denied Saudi captain Salem Al-Dawsari as the opportunities increased in regularity, with Nasser Al-Dawsari also frustrated by the Iraqi goalkeeper in the 63rd minute.

A last-ditch tackle by Hassan Al-Tambkti stopped Iraqi forward Mohanad Ali on a rare sortie forward 15 minutes from time while Abdulkareem went closest of all for his team deep into injury time.

However, his curling left-foot free kick from 25 yards out was pushed to safety by Al-Aqidi when he dived to his right and the Saudis prevailed to qualify for a seventh World Cup since making their debut in 1994.