Iran meanwhile accused Saudi Arabia of hurting efforts to resolve the Syrian civil war with the dispute, which has seen tensions between the Sunni and Shiite regional rivals reach new heights.
Opening a meeting of Arab League diplomatic chiefs in Cairo, the group's head Nabil al-Arabi accused Tehran of "provocative acts" and called for Arab unity.
He urged the foreign ministers, who gathered for emergency talks under a Saudi request, to "adopt a strong and clear common position calling on Iran to stop all forms of interference in the affairs of Arab nations".
The row erupted following Saudi Arabia's execution on January 2 of a prominent Shiite cleric, Nimr al-Nimr, along with 46 others on terrorism charges.
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The execution touched off anti-Saudi demonstrations in many Shiite countries including in Iran where demonstrators sacked and set fire to the Saudi embassy in Tehran and its consulate in second city Mashhad.
Riyadh cut diplomatic ties with Tehran the next day and was followed by a number of its Sunni Arab allies including Bahrain and Sudan. Other Arab countries downgraded ties or recalled their envoys to Tehran.
Riyadh, which is leading an Arab military intervention against Iran-backed Shiite rebels in Yemen, denied the accusation, saying no operations were carried out near the mission.
Saudi Arabia and Bahrain have also cut air links with Iran, while Tehran has banned Saudi goods from import.
Today's talks in Cairo come after foreign ministers of the Gulf Cooperation Council, which groups Sunni Arab monarchies, expressed their "total support" for Saudi Arabia on Saturday.
The dispute has raised fears of increased sectarian unrest across the Middle East and concerns it could derail efforts to resolve a range of conflicts, including in Yemen and Syria, where Saudi Arabia and Iran support opposing sides.