Some fanfictions might depict Naruto as having a deeper understanding of the chakra system than ever before. He could have found a way to disrupt Madara's connection to the chakra source, or maybe he was able to use his own chakra in a way that nullified Madara's powerful jutsus. Also, Naruto's experience from all his previous battles might have led him to anticipate Madara's moves and strategies, allowing him to stay one step ahead and ultimately defeat him.
Well, it could be through his powerful ninja techniques. Maybe he uses his Sharingan to paralyze Sakura, or perhaps he physically restrains her with his great strength. In fanfictions, there are many creative ways for such a scenario to play out.
Madara could also save Naruto by using his knowledge of the ninja world. Maybe he has some inside information about a plot against Naruto and he intervenes in time to stop it. He might have discovered a secret plan by an enemy group and takes action to keep Naruto out of harm's way. This could involve manipulating events behind the scenes or directly confronting the threat.
Well, in some versions of fanfiction, Naruto might have unlocked a new and super - powerful form of his Sage Mode. This enhanced form could give him the strength and speed necessary to outmaneuver and overpower Madara. Maybe he also gets some unexpected help from allies, like a new jutsu from Kakashi that weakens Madara's defenses just long enough for Naruto to land the final blow.
Well, in some versions, Naruto might use his new and super - powered Sage Mode. He could combine his chakra with the natural energy in a way that gives him an overwhelming boost in strength and speed. This enhanced state could allow him to outmaneuver Madara's attacks and land some really powerful blows that gradually wear Madara down.
In Supernatural fanfiction, when Charlie died, it was a major turning point. Her character was so beloved by fans that her death could send ripples throughout the entire story. It could inspire new storylines where the other characters explore her past more deeply in an attempt to understand her better even in death. It might also lead to new alliances being formed as characters who previously didn't interact much come together in the face of this loss.
In some Naruto fanfictions, Madara might be sealed through a powerful jutsu created by the main character. For example, the protagonist could combine different elemental chakra natures to form a unique sealing technique specifically designed to counter Madara's power.
At first, it might be very rocky. Naruto would be suspicious of Madara given his reputation. But as time goes on, if Madara shows genuine care and teaches Naruto useful skills, Naruto could start to respect him. Eventually, they could develop a father - son - like bond.