Naruto could use Escanor's power to boost his physical attacks. For instance, when he throws a punch, it could be surrounded by the sun's energy, making it more powerful.
Naruto could also use Escanor's power in a strategic way. Since Escanor's power varies with the time of day, Naruto could plan his battles accordingly. He could hold off tough opponents until the sun is at its peak, when his power would be the greatest. And during the night, he could use his own ninja skills and chakra reserves more conservatively, waiting for the day to come again to unleash the full potential of Escanor's power.
Naruto would become more confident. With Escanor's power, he'd have a new level of strength that he didn't have before. He might be less impulsive in battles because he has such a powerful ace up his sleeve. For example, instead of rushing head - on all the time, he'd calculate his moves better, knowing he can unleash Escanor's power when needed.
The plot could revolve around a villain who is immune to Naruto's normal attacks but is vulnerable to Escanor's power. So Naruto has to fully embrace this new power source. Along the way, he might meet characters from Escanor's world who help him understand the power better. There could be a lot of action scenes where Naruto uses the power in creative ways, like using Escanor's 'Rhitta' weapon in combination with his kunai. And there could be a sub - plot about Naruto's friends being a bit jealous or worried about this new power he has.
It could be really exciting. Maybe Naruto gets some of Escanor's power of the sun. He could use it in battles against tough enemies like Madara. For example, he might be able to increase his strength during the day like Escanor does with his 'Sunrise' form, and become almost unbeatable.
It could be really interesting. Naruto is known for his determination and growth, while Escanor is extremely powerful and has a unique personality. In the fanfic, Naruto might gain some of Escanor's powers like his incredible strength during the day. Maybe Naruto would use these new powers to protect his village in a different way. It could also explore how Naruto's friends in the Hidden Leaf Village would react to his new powers and this new side of him.
I'm not entirely sure if there is a specific 'naruto is escanor fanfic' out there. It depends on the creativity of the fanfic writing community. Some writers might be interested in exploring how Naruto's personality and abilities would interact with Escanor's, perhaps in a scenario where they meet in a different dimension or something. But you'll have to do some searching on the major fanfic platforms to be certain.
In such a fanfiction, it might be that the powers combine in an unexpected way. Escanor's power is often related to his pride and his 'sun' - like strength. Naruto could learn to use this power in a way that combines with his own chakra system. Perhaps he uses the pride aspect to boost his confidence even more in battle, and the physical strength to enhance his taijutsu. It could also lead to some interesting character development as Naruto has to deal with this new, more egotistical side of his power.
One unique feature is the combination of different power systems. Es canor has his own set of powerful abilities from his original story, and when these are introduced into the Naruto world with its chakra - based powers, it creates a whole new range of possibilities for battles and storylines.
His relationship with his friends in Konoha would also change. They would look at Naruto in a new light, with a mix of awe and pride. Naruto might become a bit more of a leader figure among them, as his new power would make him stand out even more. However, he would still be the same Naruto at heart, so he would have to make sure not to let the power go to his head and alienate his friends.
His chakra - based powers could be seen as a form of magic in Westeros. This would make him both feared and respected. For example, his ability to jump great heights and move at high speeds would make him a formidable opponent in battles. In the power struggle among the different houses, Naruto could easily tip the scales in favor of the side he chooses to support. He could also use his skills to protect the common people, which would earn him a lot of loyalty and further shift the power dynamics.
Some would be in awe. The villages that Naruto has helped in the past would likely see it as another sign of his strength and a great asset. For example, the Hidden Leaf Village would feel even more protected. However, the other villages that have been enemies or rivals in the past might see it as a threat and start to plot against Naruto and the Leaf Village.