A stunning strike from Deco and a Cristiano Ronaldo penalty gave Portugal a 2-0 triumph over Iran on Saturday, sealing their place in the World Cup second round.
In an often tetchy and generally drab Group D encounter, Iran held Portugal at bay for 63 minutes.
Playmaker Deco, back in the side after injury, broke the deadlock by thumping in a sweet right-foot shot following a left-wing cross from captain Luis Figo.
Portugalhad much more of the possession but Iran's defence did well to keep lone striker Pauleta quiet.
Ronaldo made sure of victory with 10minutes to go, clipping his spot kick high into the net after Figo was sent flying by a tackle from skipper Yahya Golmohammadi.
Afterconverting his penalty, winger Ronaldo fell to his knees and screamed with joy.
Portugal, who made three changes to the side which struggled past Angola 1-0on Sunday, had wasted several good chances in the first half.
Deco pounced on a Figo cross to force a fine save from Iran goalkeeper Ebrahim Mirzapour in the 13thminute.
Portugal then cranked up the pressure towards the interval, with Ronaldo's powerful left-foot strike striking the side-netting.
Rightback Miguel also pushed forward, stretching Mirzapour again as the ball almost squeezed under his body.
Iranhad an opportunity of their own when a header from Vahid Hashemian forced Portuguese keeper Ricardo into a smart stop.