Ulster ended a five-match losing run in all competitions with a dogged 17-7 United Rugby Championship win at Connacht.
Leinster brushed aside Ulster 43-20 at the Aviva Stadium to book a United Rugby Championship semi-final clash against the Bulls in Pretoria next weekend.
Leinster and Ulster have both announced their teams for Saturday evening's URC quarter-final clash at the Aviva Stadium.
John Cooney slotted over a last-gasp long-range penalty to earn Ulster a 23-21 win over Leinster and guarantee them a place in the United Rugby Championship play-offs.
A last-gasp penalty from John Cooney saw Ulster keep their United Rugby Championship play-off hopes on track with a 19-17 win over Cardiff after being behind for most of the game at the Kingspan Stadium.
Ulster have revealed that departing loosehead Steven Kitshoff sustained an ankle injury in the Challenge Cup victory over Montpellier on Sunday, but could still make Saturday's quarter-final against ASM Clermont Auvergne.
Ulster made light of former head coach Dan McFarland’s sudden departure from Ravenhill as they ran in seven tries to register a vital and convincing 49-26 victory over the Dragons.
The 27-year-old full-back suffered a knee injury in the win over Italy and did not train on Thursday.