Leinster were edged out 16-15 by his old province at Dublin’s Aviva Stadium, but O’Gara believes their main target this season has been avenging their 24-21 loss to La Rochelle in Marseille 12 months ago.

"Obviously, Leinster will be disappointed by that, but their focus has been on winning in Europe and they've made their plan that that was the team they were going for,” said the Heineken Champions Cup’s record points-scorer.

"Last weekend there were 12 Leinster internationals in the stands for the game against Munster. Munster won, but it wasn't against Leinster's strongest side. It was like for us in Montpellier. It will be a completely different team.

“We're expecting the best version of Leinster and the best version of them is a formidable task. We know how difficult it is going to be, but we want to test ourselves against the best."

However, O’Gara believes the final should not just be about how to halt the Leinster juggernaut, but also how the four-time winners will prevent La Rochelle retaining their title.

“We talk all the time about stifling or stopping Leinster, but stopping La Rochelle is also a subject,” said the 46-year-old Irishman.

“This perception is also important. Our last defeat (in the Champions Cup) was almost two years ago. It's important to get there and make it 50-50 to win the match.

"I'm not too interested in the opponent even if I respect him. I am focused on my team, on our path and what we are going to do on Saturday.

"We know it will be very hard, but it is possible. It will be crucial to manage stress in a venue where there will be a lot of adversity. It will be a big test."

Stade Rochelais head coach Ronan O’Gara is anticipating “a completely different” Leinster Rugby line-up to the one who lost a dramatic United Rugby Championship semi-final to Munster Rugby last weekend as he prepares for a Heineken Champions Cup final rematch on Saturday.