| # | Group A | MP | W | D | L | G | GD | Pts | Form |
|---|---|---|---|---|---|---|---|---|---|
| 1. | AS Roma | 3 | 2 | 1 | 0 | 8:1 | 7 | 7 | |
| 2. | Young Boys | 3 | 2 | 0 | 1 | 6:3 | 3 | 6 | |
| 3. | CSKA Sofia | 3 | 1 | 0 | 2 | 3:4 | -1 | 3 | |
| 4. | CFR Cluj | 3 | 0 | 2 | 1 | 1:3 | -2 | 2 | |
| # | Group B | MP | W | D | L | G | GD | Pts | Form |
| 1. | Arsenal | 3 | 3 | 0 | 0 | 11:2 | 9 | 9 | |
| 2. | Molde | 3 | 2 | 0 | 1 | 4:4 | 0 | 6 | |
| 3. | SK Rapid | 3 | 1 | 1 | 1 | 7:7 | 0 | 4 | |
| 4. | Dundalk | 3 | 0 | 0 | 3 | 4:9 | -5 | 0 | |
| # | Group C | MP | W | D | L | G | GD | Pts | Form |
| 1. | Bayer Leverkusen | 3 | 3 | 0 | 0 | 14:3 | 11 | 9 | |
| 2. | Slavia Prague | 3 | 3 | 0 | 0 | 7:2 | 5 | 9 | |
| 3. | H. Beer Sheva | 3 | 2 | 0 | 1 | 6:5 | 1 | 6 | |
| 4. | Nice | 3 | 1 | 0 | 2 | 4:6 | -2 | 3 | |
| # | Group D | MP | W | D | L | G | GD | Pts | Form |
| 1. | Benfica | 3 | 2 | 1 | 0 | 10:3 | 7 | 7 | |
| 2. | Rangers | 3 | 2 | 1 | 0 | 6:4 | 2 | 7 | |
| 3. | St. Liege | 3 | 1 | 1 | 1 | 4:5 | -1 | 4 | |
| 4. | Lech Poznan | 3 | 1 | 0 | 2 | 5:7 | -2 | 3 | |
| # | Group E | MP | W | D | L | G | GD | Pts | Form |
| 1. | PSV | 3 | 2 | 0 | 1 | 8:4 | 4 | 6 | |
| 2. | PAOK | 3 | 1 | 2 | 0 | 5:2 | 3 | 5 | |
| 3. | Granada CF | 3 | 1 | 1 | 1 | 2:2 | 0 | 4 | |
| 4. | Omonia | 3 | 1 | 0 | 2 | 3:5 | -2 | 3 | |
| # | Group F | MP | W | D | L | G | GD | Pts | Form |
| 1. | AZ Alkmaar | 3 | 1 | 2 | 0 | 5:2 | 3 | 5 | |
| 2. | Napoli | 3 | 1 | 1 | 1 | 3:2 | 1 | 4 | |
| 3. | Real Sociedad | 3 | 1 | 1 | 1 | 3:3 | 0 | 4 | |
| 4. | Rijeka | 3 | 1 | 0 | 2 | 3:4 | -1 | 3 | |
| # | Group G | MP | W | D | L | G | GD | Pts | Form |
| 1. | Leicester | 3 | 3 | 0 | 0 | 9:0 | 9 | 9 | |
| 2. | Braga | 3 | 2 | 1 | 0 | 8:3 | 5 | 7 | |
| 3. | FK Zorya Luhansk | 3 | 1 | 0 | 2 | 3:6 | -3 | 3 | |
| 4. | AEK Athens FC | 3 | 0 | 0 | 3 | 3:9 | -6 | 0 | |
| # | Group H | MP | W | D | L | G | GD | Pts | Form |
| 1. | AC Milan | 3 | 2 | 0 | 1 | 7:5 | 2 | 6 | |
| 2. | Lille | 3 | 1 | 2 | 0 | 5:4 | 1 | 5 | |
| 3. | Sparta Prague | 3 | 1 | 0 | 2 | 5:6 | -1 | 3 | |
| 4. | Celtic | 3 | 1 | 0 | 2 | 5:9 | -4 | 3 | |
| # | Group I | MP | W | D | L | G | GD | Pts | Form |
| 1. | Villarreal | 3 | 3 | 0 | 0 | 12:3 | 9 | 9 | |
| 2. | Maccabi Tel Aviv | 3 | 2 | 1 | 0 | 3:1 | 2 | 7 | |
| 3. | Sivasspor | 3 | 1 | 0 | 2 | 3:3 | 0 | 3 | |
| 4. | Qarabag | 3 | 0 | 1 | 2 | 4:7 | -3 | 1 | |
| # | Group J | MP | W | D | L | G | GD | Pts | Form |
| 1. | Tottenham | 3 | 3 | 0 | 0 | 9:0 | 9 | 9 | |
| 2. | Antwerp | 3 | 2 | 0 | 1 | 4:2 | 2 | 6 | |
| 3. | LASK | 3 | 1 | 1 | 1 | 7:8 | -1 | 4 | |
| 4. | Ludogorets | 3 | 0 | 0 | 3 | 3:8 | -5 | 0 | |
| # | Group K | MP | W | D | L | G | GD | Pts | Form |
| 1. | D. Zagreb | 3 | 2 | 1 | 0 | 4:1 | 3 | 7 | |
| 2. | Wolfsberger AC | 3 | 1 | 1 | 1 | 2:4 | -2 | 4 | |
| 3. | Feyenoord | 3 | 1 | 0 | 2 | 4:7 | -3 | 3 | |
| 4. | CSKA Moscow | 3 | 0 | 2 | 1 | 0:1 | -1 | 2 | |
| # | Group L | MP | W | D | L | G | GD | Pts | Form |
| 1. | Hoffenheim | 3 | 3 | 0 | 0 | 11:1 | 10 | 9 | |
| 2. | Crvena zvezda | 3 | 2 | 1 | 0 | 7:2 | 5 | 7 | |
| 3. | Liberec | 3 | 1 | 1 | 1 | 1:2 | -1 | 4 | |
| 4. | Gent | 3 | 0 | 0 | 3 | 2:8 | -6 | 0 |