Colombia will feel hard done by nevertheless as a marginal offside ruled out a late goal by Davinson Sanchez.
The Colombians will play Ghana in the last 32 next Friday, while runners-up Portugal will see Cristiano Ronaldo face his old Real Madrid teammate Luka Modric when they play Croatia on Thursday.
However, Ronaldo was a peripheral presence in the fast-paced match, outshone by another former Real teammate, 34-year-old James Rodriguez.
The game watched by US Secretary of State Marco Rubio and Fifa President Gianni Infantino was played to the backdrop of a cacophony of noise from Colombian fans.
Colombia should have opened the scoring early on but Jhon Cordoba headed over from close range after being brilliantly teed up by Bayern Munich star Luis Diaz.
Cordoba went close again in the 17th minute, showing some sparkling skills to shrug off a Portuguese defender and unleash a piledriver of a strike.
Portugal goalkeeper Diogo Costa did well to beat it away.
Portugal have their talisman in the ageing Ronaldo but Colombia have their own in Rodriguez.
In his 11th World Cup appearance — a record for his country — the 34-year-old produced a typical piece of magic, a reverse pass found Jhon Arias, whose goalbound effort was cleared off the line by Ruben Neves.
Ronaldo’s sole contribution was a free-kick which went straight into the arms of Colombian goalkeeper Camilo Vargas.
The Colombian goalkeeper produced a save of the highest order shortly afterwards to deny Bruno Fernandes.
Rodriguez was pulling the strings but he had a go himself close to the break, his shot was on target but Costa gathered it safely.
Meanwhile, Yoane Wissa scored twice as DR Congo beat Uzbekistan 3-1 and qualified for the last 32 of the World Cup for the first time in their history on Saturday.
They will meet England after registering their ever World Cup win.
Eldor Shomurodov’s lob over Lionel Mpasi gave the Uzbeks a perfect start in Atlanta.
But Newcastle striker Wissa levelled from the penalty spot before Fiston Mayele’s goal sent the mainly Congolese crowd into a frenzy.
Wissa rounded off a historic night for the Africans with a fine strike in stoppage time for his third goal of the tournament.
Uzbekistan knew before kick-off they were realistically eliminated given the massive swing in goal difference they would need to progress. (AFP)
