Struggling in Europe after back-to-back losses left them outside the knockout places, Musiala broke through the stubborn Benfica defence, heading in a Harry Kane assist.
The Italian champions remain undefeated in the competition this season and sit fifth on 10 points at the midway point of the new league phase format.
It was another commanding victory for LaLiga leaders Barcelona who are in an imperious vein of form, scoring 24 goals in six successive wins in all competitions, including thrashings of Bayern Munich and Real Madrid.
City's 4-1 defeat to Sporting Lisbon on Tuesday was a third straight loss for the English champions -- the first time that has happened since 2018.
Hammered 4-0 by rivals Barcelona in the Clasico at the end of October, Los Blancos slumped to a second consecutive home defeat on Tuesday in Europe, with AC Milan triumphing 3-1 at the Santiago Bernabeu.
Since Milan's triumph under Carlo Ancelotti in Athens 17 years ago Madrid have won the Champions League six times, three of those victories coming with Ancelotti in the dugout.
Alonso, who scored as Liverpool won the 2005 Champions League final, was reportedly the Reds' top target to replace Jurgen Klopp as manager at the end of last season.
Los Blancos' La Liga match against Valencia on Saturday was postponed because of the situation in the east of Spain, where at least 217 people have died and many more are missing.
Nunez sprang forward to prod home the goal-bound ball, grabbing his first Champions League goal since February 2023.
Struggling in Europe after back-to-back losses left them outside the knockout places, Musiala broke through the stubborn Benfica defence, heading in a Harry Kane assist.
The Italian champions remain undefeated in the competition this season and sit fifth on 10 points at the midway point of the new league phase format.
It was another commanding victory for LaLiga leaders Barcelona who are in an imperious vein of form, scoring 24 goals in six successive wins in all competitions, including thrashings of Bayern Munich and Real Madrid.
City's 4-1 defeat to Sporting Lisbon on Tuesday was a third straight loss for the English champions -- the first time that has happened since 2018.
Hammered 4-0 by rivals Barcelona in the Clasico at the end of October, Los Blancos slumped to a second consecutive home defeat on Tuesday in Europe, with AC Milan triumphing 3-1 at the Santiago Bernabeu.
Since Milan's triumph under Carlo Ancelotti in Athens 17 years ago Madrid have won the Champions League six times, three of those victories coming with Ancelotti in the dugout.
Alonso, who scored as Liverpool won the 2005 Champions League final, was reportedly the Reds' top target to replace Jurgen Klopp as manager at the end of last season.
Los Blancos' La Liga match against Valencia on Saturday was postponed because of the situation in the east of Spain, where at least 217 people have died and many more are missing.
Nunez sprang forward to prod home the goal-bound ball, grabbing his first Champions League goal since February 2023.
The Norwegian scored twice, including a backheel at shoulder height, as City ran riot against the Czech champions.