Iranian authorities didn't even try to use the expression 'the president suffered no harm' following a wave of reports of an assassination attempt on Mahmoud Ahmadinejad. From their perspective, there was no possible reason for Ahmadinejad to suffer any harm.
They never saw and never heard of any attempt on his life, and even that 'grenade' that was supposedly thrown at his convoy, as far as they are concerned it was just a firecracker that was supposed to express the support of the people for the president."