Leinster will travel to France to play Toulon in the Champions Cup semi-final.
The reigning European champions saw off Wasps 32 - 18 in today's quarter-final at Stade Félix Mayol.
22 of Toulon's points came courtesy of Frédéric Michalak, while it was Mathieu Bastareaud and Ali Williams with the tries for the team.
Meanwhile Saracens have beaten Racing Metro 12 - 11 to book a place in the other semi-final against Clermont.
Racing Metro's Maxime Machenaud went over the line for the game's only tries, but it was a late penalty Marcelo Bosch that let Saracens sneak a point ahead and secure a place in the semis.
The semi-final line-up for the Challenge Cup will also be completed this evening, with London Irish taking on Edinburgh at the Madejski.
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