"I am happy and enjoying this moment, not because I scored the goals, but because of the level we have been able to demonstrate in recent years".
However, they still sit five points behind leaders Ukraine, who have one game in hand.
The hosts equalized with a header by Vytautas Andriuskevicius from a corner kick in the 28th, with the ball hitting the post before going in.
Ronaldo deflected in a cross by Bernardo Silva three minutes later, then added his fourth with a well-placed shot from inside the area in the 76th before being substituted and applauded by most of the local crowd. "We are getting closer to our goal".
The former Manchester United and Real Madrid star scored his 21st European qualifier goal for Portugal against Serbia last weekend. The Fulham striker headed the visitors in front after 36 minutes and Nemanja Radonjic curled in the second 10 minutes after the restart.