One possible plot twist could be that Sasuke has been under a genjutsu that makes him target Sakura, and Naruto has to break the genjutsu first to truly save her. Maybe the one who cast the genjutsu is a new, powerful enemy who wants to disrupt the bond between Team 7. Naruto, with his strong will and newfound powers, manages to find the source of the genjutsu and free Sasuke from its control, thus saving Sakura from harm.
In many Sasuke - Sakura - Gaara fanfictions, Sasuke saving Sakura from Gaara can be a really exciting plot. It often shows Sasuke's strength and his hidden feelings for Sakura. Maybe he uses his Sharingan to outwit Gaara's sand attacks and rescue Sakura just in time.
Naruto's power is crucial. His physical strength allows him to stand up to Sasuke in a fight. For example, his Rasengan can be a powerful weapon against Sasuke's attacks. His Nine - Tails chakra also gives him an edge, as it boosts his speed and power. He can use this power to quickly get between Sasuke and Sakura when Sasuke tries to harm her, and then hold Sasuke off while he tries to reason with him or find a way to stop his aggression.
The plot could be that Sakura has been drugged by some enemy ninjas. The drug makes her lose control and she attacks Naruto. Sasuke, being observant, realizes what's going on. He quickly uses his genjutsu to put Sakura to sleep before she can harm Naruto. Then he and Naruto work together to find the antidote for Sakura.
Often, there is also an emotional aspect. Naruto might be motivated by his love for Sakura (even if it's just platonic in some cases) or his sense of duty towards her as a teammate. This emotional drive gives more depth to the story. And sometimes, the act of saving Sakura can also be a turning point in the relationship between Naruto and Sasuke, leading to either more conflict or a chance for reconciliation in the fanfic.
In fanfiction, Sasuke might save Sakura from Orochimaru by using his Sharingan. His powerful eyes could detect Orochimaru's moves and counter them, allowing him to rescue Sakura.
In the fanfiction, Itachi might be acting according to some secret mission that endangers Sakura's life. Sasuke, who has a strong bond with Sakura now, won't let that happen. He jumps in and uses his ninja skills. Sasuke could have developed some new jutsu that he uses to counter Itachi's attacks. This not only saves Sakura but also shows Sasuke's growth as a ninja. And Sakura, in turn, might be in the middle of researching some important medical ninja stuff that Itachi's actions could have disrupted if not for Sasuke.
Well, in the fanfiction, Naruto could save Ino from Sasuke by appealing to Sasuke's former friendship. Naruto might talk to Sasuke, reminding him of their days in Team 7 and how Ino is also their comrade, which makes Sasuke change his mind and let Ino go.
Finding the exact 'naruto saves sakura from sasuke fanfic' can be a bit of a hunt. You might want to also check out Naruto - related fan communities on social media platforms. Sometimes fans share their favorite fanfics there. And when you do find one, look for ones with good reviews or high ratings as they are more likely to be well - written and engaging.