Iranian Cooperatives Minister Mohammad Abbasi handed to the Brazilian leader a message from President Ahmadinejad about Israel's military campaign in the Gaza Strip.
The message condemned "the regime occupying Palestine, which attacks the defenseless people of Gaza ... and international efforts to end this crisis", Iran's embassy in Brasilia told AFP.
"The involvement of new, reliable figures" in diplomatic attempts, such as Lula and his Iranian counterpart, Mahmoud Ahmadinejad, "could correct the faults committed by traditional intermediaries, including the United States", the message said.
Upon receiving Abbasi, Lula's foreign affairs adviser Marco Aurelio Garcia reiterated Brazil's position on the conflict, calling for an "immediate end to hostilities on both sides".
The Iranian president has sent emissaries to 22 countries to join its call for the immediate end to Israel's assault on the coastal strip and an end to the Israeli blockade on Gaza.
After 16 days of air and sea bombardment and over a week of incursions, the Israeli army has so far killed a number of 879 Palestinians, and wounded 3695 more, Gaza medics said.
Tanks and warplanes continued to pound Gaza on Sunday as a defiant Israel vowed to pursue its war on Hamas, which rules the territory, despite a truce order from the UN Security Council and amid warnings of dwindling food supplies.