Saudi media said the meeting late on Sunday homed in on "regional and international developments," without a direct mention of the deadly crackdown on dissent in Syria.
Both fellow Muslim states have urged Syrian President Bashar al-Assad to bring in swift reforms and end the killings.
The Gulf monarchy, a Sunni regional heavyweight which had remained silent on the Syrian revolt which broke out in mid-March, earlier this month recalled its ambassador from Damascus.
Gul last week urged Assad to implement reforms before it is too late, in a letter handed to the embattled Syrian leader by Turkey's foreign minister.
King Abdullah and US President Barack Obama agreed in a telephone call on Saturday that "the Syrian regime's brutal campaign of violence against the Syrian people must end immediately," the White House said.
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