Recent history counts for nothing, says Cullen

After three defeats from their opening four matches last term, Leinster welcomed Munster to the Aviva Stadium in desperate need of victory - and that they got in the form of a gritty 13-9 win which sparked a turnaround in fortunes that ultimately saw them crowned European champions although Munster went on to be crowned league champions at the Dubliners' expense.

This time around and things aren't as bleak for Cullen and co, who are third in the table and level on points with Munster, but the Ireland lock is only too aware of what victory means for either side.

"I think they are special occasions because the supporters buy into them so much," said Cullen.

"The atmosphere is special whether that is in Dublin or down in Limerick at Thomond.

"There are a lot of different things that go into the melting pot. I don't think it boils down to revenge for the last game.

"There are always so many different motivating factors in these games.

"There is the rivalry between two sets of players that have worked reasonably closely together over the last three or four months, competing against each other as well. People want to put their case forward there as well."