LONDON (Reuters) - Arsenal manager Mikel Arteta hailed a magic night as his side held their nerve to reach the Champions League quarter-finals with a penalty-shootout victory over Porto on Tuesday.

Leandro Trossard's first-half goal made it 1-1 on aggregate after Porto had edged the first leg, but Arsenal could not conjure a winner in normal and extra time before they triumphed 4-2 on penalties.