كتب : Mohamed Sabe
Flavio Amado opened the scoring for Ahli six minutes after restart and Mohamed Abou-Treika secured the win from a 73rd minute free-kick.
The win put the five-time African champions in the CWC semi-finals where they will face South American champions Internacional of Brazil in Tokyo on Wednesday.
Ahli dominated the game in terms of possession and chances made throughout the 90 minutes.
The Egyptian giants could have broken the deadlock as early as the 3rd minute, but Abou-Treika's long range effort went over the crossbar.
In the 21st minute, a swift exchange between Islam Al-Shater and Abou-Treika put Flavio in scoring position, but the Angolan international shot wide.
Meteb also wasted a chance to open the score when he was beaten by the defense to a deft pass from Ahmed Shedid just before the interval.
After a scoreless first-half, Flavio opened his account with a fierce shot from the edge of the area after being set up from under-pressure Emad Meteb.
Abou-Treika sealed the win when he curled a trademark free-kick home past the motionless Auckland keeper Ross Nicholson.
The win is the first for Ahli in the CWC after last year's campaign ended with two defeats.
Auckland City will face the loser from Monday's match between Club America of Mexico Jeonbuk Motors of South Korea.