In many fanfictions, Naruto might use his ninja skills. He could suddenly appear and physically stop the bullies. For example, he might use his Shadow Clone Jutsu to surround the bullies and intimidate them into leaving Sakura alone.
Naruto could also save Sakura by using his words. He is known for his determination and his ability to reach people's hearts. He might give an inspiring speech about how wrong bullying is and how Sakura is a valuable person, shaming the bullies into stopping.
Another way Naruto could save Sakura is by getting help from his friends. He could gather his ninja comrades, like Sasuke and Kakashi. Together, they could show a united front against the bullies, making it clear that Sakura is under their protection.
Well, in some fanfictions, Fu might use her unique jutsu skills. For example, she could create a powerful barrier to protect Naruto from Sakura if Sakura is somehow being controlled or acting aggressively. Fu's ability to manipulate nature energy could also play a role. She might use it to disorient Sakura or make her lose her focus on Naruto.
He could use his sand powers to create a barrier between Naruto and Sakura.
Naruto sometimes reacts with humor. He'll make jokes about the bullies' actions, which can either make the bullies angrier or make some of the bystanders see how ridiculous the bullies are. For example, if a bully tries to trip him, he might do a silly tumble and then laugh it off, saying something like 'Wow, that was a new kind of training exercise!'. And he also might use these situations to prove his own strength and determination. He'll train even harder to show the bullies that he won't be broken by their actions.
In some fanfictions, Naruto might initially withdraw into himself. He could focus more on his training to distract from the pain. For example, he might go on long solo missions or intense training sessions in the woods, away from the reminders of Sakura.
In some fanfictions, Peter uses his intelligence to outwit the bullies. For example, he might use his scientific knowledge to create small gadgets that make the bullies look foolish without using his superpowers directly. This shows his resourcefulness.
She might be confused at first. Sakura is used to Naruto being friendly and always there for her, so his coldness would be unexpected. She may start to question what she has done wrong.
Well, in many fanfictions, Naruto might use his signature jutsus like the Rasengan. He could sense the danger the woman is in using his enhanced ninja senses and then quickly dash in to counter Rizevim's attack with his powerful moves, overpowering Rizevim and rescuing the woman.
Well, Naruto is known for his quick thinking. So perhaps he quickly assesses the situation and uses the surrounding environment to his advantage. For example, if there's a water source nearby, he could use his water jutsu skills (if he has them in that fanfiction) to counter the fireball and save Ami. Or he might even use his body as a shield if it comes down to it, relying on his Uzumaki durability.
Well, it could be that Naruto has developed a new and powerful form in the fanfiction. With this form, he emits an intense chakra that scares off the Cloud attackers who are after Hinata. His speed and strength in this new form are so great that he can easily reach Hinata and get her to safety before the Cloud ninjas can react.
In some fanfictions, Naruto might move on from Sakura by focusing on his ninja duties. He throws himself into more difficult missions, realizing that his life has a greater purpose than just pining over Sakura. This way, he gradually distances himself from his old feelings as he becomes more dedicated to protecting the village.