A 94th-minute winner by substitute Victor Moses gave Chelsea a dramatic 3-2 win at home to Shakhtar Donetsk on Wednesday that reinvigorated their title defence.
The champions looked set for a damaging draw that would have them left them at risk of a group-stage exit until Moses rose to meet Juan Mata's corner deep into stoppage time and claim his first ever goal in the competition.
Chelsea had led twice, only for Shakhtar to reply on both occasions through Willian, as the Ukrainian champions threated to inflict more misery on Roberto Di Matteo's side after their 2-1 win in Ukraine two weeks ago.
However, Moses' goal enabled Chelsea to draw level with Shakhtar on seven points in Group E, giving them a one-point advantage over third-placed Juventus.
Braga: Manchester United became the first British side through to this season's Champions League knockout stage after coming from behind to beat Group H rivals Braga 3-1 on Wednesday.
Needing just a point to assure their qualification to the last 16, United fell behind to a penalty from Alan just after half-time but strikes from Robin van Persie, Wayne Rooney and Javier Hernandez ensured the Red Devils maintained their perfect record in this year's competition.
But the game was interrupted only a few minutes later as a generator broke down, leaving the stadium shrouded in darkness and the players ordered back to the changing rooms.