In the competition tonight, champions Manchester City are away to Young Boys in Group G from 8pm.
The other game in that Group is between RB Leipzig and Red Star Belgrade.
Newcastle United host Borussia Dortmund in Group F at St James' Park from 8, with PSG to play AC Milan in the other Group game.
Also at 8 o'clock, it's Celtic up against Atletico Madrid in Glasgow in Group E - with the other tie in that Group involving Feyenoord and Lazio.
In Group H, Barcelona play Shakhtar Donetsk and Royal Antwerp face FC Porto at 5:45pm.
Three Kildare Players Have Been Named In Match Day Squad URC Against Zebre
Friday Morning Sports Update
Sarah Keane Confirmed As CEO Of Cricket Ireland
Jason Holland Will Step Down As Assistant Coach With New Zealand
Thursday Morning Sports Update
Wednesday Evening Sport's Update
Cutting Inter-County To Sevens Months Is 'Achievable' Says Gaelic Player Association CEO
Kildare's Lauren Walsh Will Play At Golf's Wistron Ladies Open On Friday
