LONDON, Sept 26 (Reuters) - Real Madrid got their Champions League campaign on track with a 5-1 victory over Dynamo Kiev, while Manchester United ground out a 1-0 revenge win at Benfica on Tuesday.
Real, rocked by a 2-0 defeat in their Group E opener at Olympique Lyon two weeks ago, were 3-0 up at halftime after goals from Dutchman Ruud van Nistelrooy, captain Raul and Arsenal's on-loan forward Jose Antonio Reyes.
Raul and Van Nistelrooy each added another after the break as Real turned victory into a rout.
United, knocked out of last season's Champions League by a 2-1 group stage defeat at Benfica, had a stunning shot by French striker Louis Saha to thank for a scrappy victory at the Luz stadium in Group F - their first away win in the competition for nearly three years.
Arsenal skipper Thierry Henry scored one and set up the other in a 2-0 home win over Porto that sent last season's finalists two points clear in Group G, following CSKA Moscow's 1-0 win over Hamburg SV.
Lyon, buoyed by their victory over Real, followed up with a 3-0 win at Steaua Bucharest, while Celtic shrugged off a defeat by United two weeks ago to beat FC Copenhagen 1-0.
There were no winners in Group H, where AC Milan had to settle for a 0-0 draw with Lille in northern France and AEK Athens finished 1-1 with Anderlecht in Greece.