Sadio Mane scored a hat-trick as Liverpool all but booked their place in the Champions League quarter-finals with a 5-0 thrashing of Porto.
Mane's treble was added to by goals from fellow forwards Mohamed Salah and Roberto Firmino in the away leg of their their round-of-16 tie.
Salah's strike was the Egyptian's 30th of the campaign as Jurgen Klopp's side built up a formidable advantage to take back to Anfield next month.
It ensured a comfortable night in the Estadio do Dragao as the Reds' first knockout encounter in nine years at this level passed without major incident.