Federico Chiesa opened the scoring for the Old Lady in the 13th minute against Torino at the Olimpico di Torino on Saturday.
But Torino striker Antonio Sanabria pulled back an equaliser in the first half before firing his side into the lead only seconds into the second half.
Andrea Pirlo's men were handed a fighting chance in securing all three points when Ronaldo found the back of the net late in the second half.
Ronaldo's header from close range secured a point for Juventus, but it was initially ruled out as offside.
However, VAR intervention showed the 36-year-old Portuguese superstar was onside moments before he fired past Salvatore Sirigu.
Ronaldo's hopes of securing a brace and sealing a sensational comeback win for Juventus were thwarted during a last-gasp miss in Turin.
Juan Cuadrado managed to pick out the former Manchester United and Real Madrid superstar in the box late on.
But Ronaldo was unable to beat Sirigu for the second time as he shockingly fired the ball over the bar from only five yards out.
The five-time Ballon d'Or winner was convinced that Torino centre-back Alessandro Buongiorno had the final touch on the ball.
However, the referee didn't agree with Ronaldo's assessment and didn't award Juventus a corner.
Despite missing out on the winner, Ronaldo's equaliser ensured that Juventus would not slip to back-to-back defeats.
Juventus suffered a shock 1-0 defeat to Benevento at the Allianz Stadium before the international break.
The defending Italian champions are languishing in the Serie A title race as Antonio Conte's Inter Milan are ahead of them by 12 points.
Juventus are currently fourth and are two points behind third-place Atalanta and four points behind second-place AC Milan.
Pirlo's men will now resume their Serie A campaign on Wednesday as they host Napoli at the Allianz Stadium.
Featured Image Credit: Twitter/PA
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