"We know the pain and anguish brought by these disasters and we pray for the souls of those who perished and the quick recovery of the wounded," Mrs. Arroyo said.
A week earlier, flash floods and landslides cut a swath of destruction in southern Leyte and northern Mindanao, killing at least 193 people. Rescuers have found entire families buried alive and villages swept into the sea.
At least 47 people also remain missing almost a week after a ferry with 75 people on board sank in rough seas off Palawan.
"In behalf of our people, I express my deepest sympathy to the families of the victims of the tragedies in China and Iran," Mrs. Arroyo said.
The President said the Department of Foreign Affairs (DFA) was checking if any of the many Filipinos working in Iran were among the victims of Friday’s earthquake, which has killed at least 20,000 people.
"The DFA is coordinating with relief authorities to verify if there are Filipinos among the victims in Iran, and to ensure that they are extended utmost assistance together with the others," Mrs. Arroyo said.
"We must hold steadfast to our faith in the Almighty in these trying times," she said.
A powerful earthquake struck the ancient Silk Road city of Bam in southeastern Iran on Friday.
Officials said more than 60 percent of the houses had been flattened by the quake.
Fumes from a burst gas well in China’s southwest that killed at least 191 people left a "death zone" of villages strewn with the bodies of adults and children, some overcome as they tried to flee the clouds of poison, news reports said Friday.
Gas spewed from the well in the Chongqing region as technicians prepared an emergency effort to seal it. Officials said over 41,000 evacuees were taken into schools and government buildings while more than 290 people were hospitalized, many of them children.
Mrs. Arroyo flew to the disaster sites in Leyte and Caraga regions two days later and brought with her relief goods from the national government as well as rescue teams and donations from the United States, Germany, Japan and China.
During her weekly radio message aired over state-run Radyo ng Bayan, Mrs. Arroyo gave her thanks to the help extended by foreign nations, including the United Nations, for the landslide victims. – With AP, AFP