The pair have scored 39 goals between them in all club competitions this season and are undoubtedly the headline acts for the match, but the Sweden captain is focused on securing his nation's place in Brazil 2014.
Ibrahimovic has netted 14 of goals in his last eight matches for club and country, with the 32-year-old in understandably buoyant mood ahead of Friday's first leg in Lisbon.
"I feel good, what matters is what I think of myself. I progress all the time and although I have 32 years, I've never played better than now," the Paris Saint-Germain striker said.
"(But) it's Sweden against Portugal, do not focus on two players.
"What matters is the collective, and to succeed we all need to do well."
Erik Hamren's men suffered a 5-3 reverse against Group C winners Germany in their final round-robin clash, while Portugal are on a seven-game unbeaten run in their qualification campaign.
Portugal's only defeat in Group F was against eventual winners Russia, with Fabio Capello's men finishing a point clear to claim the automatic qualification spot.
