The 82-year-old monarch dubbed the Arab League meet the "Jerusalem summit" as he took aim at Washington's decision to recognise the disputed city as the capital of Israel and transfer the U.S. embassy from Tel Aviv.
Saudi Arabia's push for a tough stand against its arch-rival Iran will also dominate the summit as regional tensions grow over the wars in Syria and Yemen.
Gheit condemned Iranian interference in Bahrain and other Arab countries.
In a statement on Sunday, Bahram Qassemi reiterated Iran's principled policy of non-interference in the internal affairs of other countries.
On the Palestinian issue, Aboul-Gheit said Arab efforts have succeeded in taking a firm stand against the December decision by the United States to acknowledge Jerusalem as the capital of Israel, describing the American decision as a "regression in our Palestinian cause".
"We reiterate our rejection of the U.S. decision on Jerusalem", the king said in a speech in Dhahran in eastern Saudi Arabia.
The 82-year-old was speaking at the 29th annual Arab League summit in the oil-rich Saudi city of Dhahran.
The Arab leaders participating in the summit have affirmed centrality of the Palestinian issue and importance of the status of eastern Jerusalem as the capital of the future state of Palestine.
"Saudi Arabia has also reached out to Iraq to try and build ties and tackle militias there", Krieg told Agence France-Presse.
Heads of state and top officials from 21 Arab states will attend the summit excluding Syria that was suspended from the league in 2011 over Syrian regime's crackdown on protesters after peaceful protests in the southern part of the country.
Arab ministers at a preliminary meeting in Riyadh on Thursday focused heavily on blocking the move, unanimously condemning the decision by US President Donald Trump.
Moreover, Qassemi called on the Arab League member states to take necessary measures to build confidence and promote stability in the region.
The global fraternity was asked to toughen sanctions on Iran and its militias, prevent it from supporting terrorist groups, supplying Houthi militias with missiles manufactured in Iran and launched from Yemen toward Saudi cities and to abide by the UN Resolution No. 2216.
Among the leaders in attendance was Sudan's Omar al-Bashir, who walked the red carpet and was greeted by King Salman.
There was little mention of Syria, whose president Bashar al Assad was not invited to the summit.
Summits of the Arab League, established in 1945, rarely result in action.