(CNN) -- Cristiano Ronaldo's sixth-minute strike saw holders Manchester United become the first English team to win in Porto, reaching the semifinals of the Champions League 3-2 on aggregate in the process.
The European Player of the Year fired a spectacular 35-yard strike into the top corner as United remained on course to become the first team to retain the Champions League -- and will now face Premier League rivals Arsenal for a place in the final in Rome.
