Holders Leinster will have the chance to retain their European Champions Cup crown after defeating Toulouse in Dublin on Sunday.
Sunday's semi-final against Leinster will see Toulouse players wearing a special kit that includes an image of Notre Dame.
Toulouse played almost an hour with 14 men but were still able to beat Racing 92 in a magnificent European Champions Cup quarter-final.
A 28-9 victory over Stade Francais saw Top 14 leaders Toulouse break a league record as they extended their unbeaten run to 12 games.
Racing 92 ran out of time in their defeat to Toulouse, while La Rochelle survived a Top14 scare against lowly Grenoble.
Any hopes Toulouse had of snatching top spot in Pool 1 were extinguished as Leinster defeated Wasps to secure a home quarter-final.
The top two in the Top 14 table could not be separated as Clermont Auvergne and Toulouse shared a thrilling draw.
Bath owner Bruce Craig called for their Champions Cup loss to Toulouse to be replayed, but the EPCR has rejected the appeal.
Maxime Medard's late try proved crucial as Toulouse beat European Champions Cup holders Leinster on Sunday.
Jerome Kaino is set to miss five weeks for Toulouse after being suspended for striking.
Montpellier put Toulouse to the sword, Piula Faasalele's dismissal proving to be costly as last year's runners-up scored 10 tries.
France internationals Yoann Maestri and Gael Fickou have swapped Toulouse for long-term deals at Stade Francais.
Castres are set for a semi-final showdown with Racing 92.
Racing 92's bonus-point win over Bordeaux-Begles gives them the slenderest of advantages over Toulouse with one match to play.
Vincent Clerc, winner of 67 international caps for France, has announced he will retire at the end of the season.
A much-changed Racing 92 scored three late tries to stop Toulouse claiming a bonus-point victory in Top 14.