Portugal manager Fernando Santos hailed Cristiano Ronaldo a "football genius" after his 53rd career hat-trick sent Portugal into the final of the Nations League on home soil in Porto with a 3-1 win over Switzerland.
The hosts had to withstand a huge moment of VAR controversy as after Ronaldo's free-kick opened the scoring, Portugal thought they had the chance to double their lead from the penalty spot.
Instead German referee Felix Brych reversed his initial decision and awarded a spot-kick at the other end for an earlier incident, which Ricardo Rodriguez converted to seemingly send the game to extra-time.
However, Ronaldo predictably took centre stage as he struck twice in the final two minutes to set up a clash with England or the Netherlands, who meet in the second semi-final on Thursday, in Sunday's final.
"I was his coach in 2003 and I could see where he'd go," said Santos.
"He's a genius. There's genius paintings and sculptures and he's a football genius!"
Portugal made it to the last four without their all-time record goalscorer as Ronaldo took a hiatus from international football to concentrate on his first season at Juventus.
However, the five-time Ballon d'Or winner returned to the national team in March and was always likely to be the centre of attention, particularly on a day when it was reported a rape lawsuit against him had been dropped.
A lawyer for the American woman who claimed she was sexually assaulted by Ronaldo -- accusations he has strongly denied -- later dismissed that report, saying the case had not been dropped.
In front of an adoring home crowd, Ronaldo put the spotlight back on his performance on the pitch as he opened the scoring with a brilliant free-kick.
- Debut for Felix -
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The Portugal captain is however no longer his country's only star name, with Bernardo Silva starring for Manchester City where he could soon be joined by Joao Felix.
City are reportedly set to pay Felix's 120-million-euro ($135 million) buyout clause from Benfica, but the 19-year-old missed a glaring chance to mark his international debut with a goal just before the break as he blasted over from Ronaldo's pass.
Switzerland had posed a threat themselves in the first half with Xherdan Shaqiri, fresh from winning the Champions League with Liverpool, particularly lively.
However, it took the help of VAR to get them back in the game just before the hour mark.
Brych had waved away appeals for a foul by Nelson Semedo on Steven Zuber before awarding Portugal a penalty as play broke down at the other end, but overturned his initial decision.
Rodriguez drilled home the resultant spot-kick much to the fury of the home supporters at the Estadio do Dragao.
The Swiss could then have gone in front when Benfica forward Haris Seferovic headed just wide.
By contrast, Portugal had one of the deadliest finishers in football history on the end of their chances.
"Congratulations to Portugal. They had street smarts, they had the cherry on top of the cake and that made the difference. Four shots, three goals," said Switzerland coach Vladimir Petkovic.
Silva was the creator for Ronaldo to drill home his second of the night two minutes from time.
Moments later the hosts sealed their place in the final on the counter-attack as Ronaldo curled into the far corner for his 88th international goal.
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