They face RB Leipzig, Copenhagen and AC Milan respectively.
In the Champions League tonight, Celtic's players will wear black armbands in memory of those who lost their lives in the Creeslough tragedy.
Celtic face RB Leipzig in Group F at Parkhead from 8.
Real Madrid and Shakhtar Donetsk meet in the other Group game.
At 5.45, Manchester City play Copenhagen in Group G at Denmark
In the other match in that Group, Borussia Dortmund are up against Sevilla.
Chelsea take on AC Milan in Group E at the San Siro from 8pm.
Dinamo Zagreb play Red Bull Salzburg in the other tie in that Group.
In Group H, it's Maccabi Haifa against Juventus and Paris Saint Germain to face Benfica.
Excitement Building Ahead Of The 2025 Punchestown Festival
Liverpool Crowned Premier League Champions
Athy RFC Win Towns Cup Final
An Unfortunate Day For Both Kildare Senior Men's and Women's Teams This Afternoon
The Kildare Senior Men And Women Footballers Are Both In Leinster Championship Action This Afternoon
Kildare LGFA vs Dublin Team
Kildare Senior Football Team vs Louth
