Liverpool were expected to qualify from the group and did so comfortably, but this is where the real business against the established CL teams starts.
Mignolet would face the Portuguese side in the first leg of their round-of-16 tie tonight if the template of the first half of the season were still being followed, but Klopp suggested a change of plan.
"I don't know if Porto are going to be afraid but we are going to make their life hard and make them suffer", said Firmino, who has scored 20 goals in all competitions, including six in the Champions League.
"I am feeling good and getting consistent game time helps a lot", the 24-year-old is quoted as saying by The Telegraph.
Goalkeeper: The Reds boss has rotated his keepers in Europe this season but he refused to confirm that Simon Mignolet would be recalled tomorrow night so I think Loris Karius will keep his place between the sticks.
Klopp feels Coutinho's move to Barcelona in January has allowed Firmino - who has netted seven times in eight Champions League games - to take more of the limelight. "Not conceding goals, we are always closer to winning the game, no doubt".
Robertson said: 'They're the ones putting us in front.
Aboubakar was the catalyst behind Porto's last 16 spot in the competition with five strikes in the group stages. "But these are two traditional clubs, and my players give me the confidence to think that we can advance".
"We kept a clean sheet and scored fantastic goals, that's all we wanted".
"We'll recover and focus on Porto, which will be a big game for us".
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Porto have a fantastic pedigree in European competition and they will not be intimidated by Liverpool for a moment, yet some of the coverage I have seen around this game might lead you to believe this will be a walkover for Jurgen Klopp's men.
Salah will be supported by Sadio Mane, and while the Senegal global has struggled to replicate his early-season form in recent fixtures - finding himself overshadowed by the North African and Roberto Firmino - he remains one of the competition's brightest attackers.
"We need to stick to the way we want to play", Klopp added. Would you describe them generically as an attacking or a defensive team? Everyone who's reached this stage I think is a good team. "We are not too bad and we know that as well".