Another delegate said Peres - a Nobel Laureate - was a Zionist "whose place was not here in a religious meeting".
The delegates returned to the meeting only after Peres had finished his speech.
"Peres is not a religious leader; he is a man of violence," said another Iranian delegate.
According to Israeli daily Yedioth Ahronoth, Peres began his speech by indirectly attacking Iran, Al-Qaeda and the Lebanese political and militant movement Hezbollah.
