Cristiano Ronaldo’s impact and influence in the team cannot be denied, his combo with the new signing Duran has made their attack more effective and dangerous giving them better edge over their league dominators Al Hilal. Al Nassr are 8 points behind the league leaders and three points behind Al-hilal so the win against Al-Hilal meant a lot to Al Nassr.
Of course, even if Cristiano Ronaldo does not perform well in the team, the other team members find confidence in him if he is in the team. That is why there is no way to deny the existence of Ronaldo influence. If the performance that Al Nassr is showing at the end could have been done before few more matches, then it would have created an opportunity surpass Al Hilal and compete with the top-ranked Al Ittihad in the last few matches. Now the gap between Al Hilal and Al Nassr is small. I think they will reach parity in points in the next few matches and I believe Al Nassr will be able to secure the 2nd position in this season.
It is always better to have another good player to focus on. With Mane, Ronaldo and Dhuran they have trio that defenses all have to focus on. If they had only Ronaldo that is good and nobody decent around him, it would have been a lot worse because Ronaldo would get all the defenses on him and not be able to do anything else.

Talisca was also nice, but he was injured most recently so he didn't get to play much with Ronaldo, they had not enough games together, but they did play some and they were good games. With the current trio, they are dissecting the defense together, if defense collapses on Ronaldo and he has a bad game, then they have two others who could have a better game. That is unguardable at lower level like Saudi league.