Two goals from Akram Afif and another from Almoez Ali saw the host nation make a perfect start as the tournament kicked off in front of a crowd of 82,490.

The only concern for Qatar coach Bartolome Marquez Lopez was an injury to star forward Ali in the second half.

But Afif proved how important he will be to his team's hopes of retaining their crown with clinical finishes at the end of each half.

Afif opened the scoring in the 45th minute when he latched onto Ali's lay off, and the forward rounded off the win in stoppage-time when he charged into the box and lifted a shot over Lebanon's goalkeeper.

Ali, who was the leading scorer when Qatar won the trophy for the first time in 2019 with nine goals, struck in the 56th. He also had a goal ruled out for offside.

But he looked in discomfort as he limped off the field in the 77th minute, holding the back of his leg.

Qatar is staging the tournament for the third time after original host China withdrew as a result of the COVID-19 pandemic.

The tournament was supposed to be held in 2023, but was delayed to this month because of the extreme heat in the height of the summer in the Middle East.