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.

Ireland And England Will Meet Next February To Kick Off 2027 Six Nations
Tolka Park Stages The Dublin Derby Between Shelbourne And Shamrock Rovers
Conor McGregor Not Included In White House Fight In June
Ireland's Men And Women Hockey Teams Book Their Spot At This Year's World Cup
Ireland To Train Collectively Today Ahead Of Next Saturday's Six Nations Clash
Monday Morning Sports Update
Kildare Hurlers Seal 2027 Division 1B Place
Kildare Hurling Team vs Carlow