Pope Francis
Half a million people had been expected.
The pontiff also prayed for all victims of clerical sex abuse.
The Pope was met by protesters in Ireland today as he spoke of his shame and pain at church abuse scandals
In 1979 over a million people gathered in Phoenix Park to witness Pope John Paul II celebrate Mass. Pope Francis is expected to draw significantly smaller crowds. But then, a lot has changed in Ireland between Pope visits.
Crowds are expected to be less than half what they were in 1979, during the last papal visit.
Truth and justice for victims in Northern Ireland is long overdue. Theresa May should act where Pope Francis has failed
Piers Morgan said: 'If it was any other religion, all hell would be breaking loose'.
'Let us pray... for peaceful coexistence.'
'That is not a good translation.'