Dybala also had a hand in the second four minutes later, his cross finding Ronaldo for the Portuguese to knock back across the goal where Matuidi scored from a hard angle.
"There's a lot of compliments for what the boys did", added the coach, who must prepare his side to face title rivals Napoli in Turin on Saturday.
Matuidi added the second when Ronaldo's mishit cross rolled across the face of goal and Bologna's defenders failed to react, allowing the France global to collect it and launch a shot into the roof of the net.
His effort was parried away but Dybala acrobatically volleyed it in for his first goal of the season.
It maintained Juve's flawless start to the campaign, with six wins from six in the league in addition to their 2-0 win at Valencia in their Champions League opener last week.
And it paid off with a third straight league win with Lorenzo Insigne opening after four minutes in Naples with a second-half brace from Polish forward Arkadiusz Milik keeping the pressure on Juventus. "I don't have a line-up in my head right now, as on Friday in training we'll see everyone together and decide".