Yes, there might be. The Naruto and Godzilla universes are both very popular, and it's not uncommon for fans to create crossover fanfictions. Some fans might be interested in imagining Naruto in a scenario related to Space Godzilla, perhaps with Naruto having to face this powerful kaiju or even teaming up with it in some strange alternate universe plot.
One idea could be that Naruto is transported to the Godzilla universe. He could use his ninja skills to try and communicate with Godzilla or other kaiju. Maybe he'd attempt to use his shadow clone jutsu to confuse the monsters during a battle.
Another possibility is that Godzilla somehow ends up in the Naruto world. The shinobi might initially see it as a great threat, but Naruto could try to communicate with it using his ability to sense emotions. Maybe Godzilla is there because it's being chased by an even greater enemy from its own world, and Naruto and his friends decide to help it.
One interesting Naruto and Godzilla fanfiction could be where Naruto gains the ability to summon a miniature Godzilla. It could add a really unique dynamic to his battles, like when he's facing powerful enemies in the Naruto universe. He could use Godzilla's raw power combined with his own ninja skills.
Well, one way is through the concept of chakra. In the Naruto world, chakra is the life force. You can make it so that Godzilla has a connection to chakra. Maybe his atomic breath is powered by a special type of chakra. This would tie the two worlds together in a cool way.
A Naruto and Godzilla fanfic could work by finding a common ground for their powers. For example, Naruto's chakra can be compared to the energy that Godzilla emits. They could either be in conflict because of different uses of this energy or they could work together to harness it for a greater good.
Naruto would probably be both amazed and a bit scared at first. But being Naruto, he would quickly jump into action. He might try to use his rasengan against Godzilla, thinking it could do some damage. However, he would soon realize that Godzilla is much more powerful than he initially thought and would have to come up with a different strategy, like using his speed to avoid Godzilla's attacks and find its weak points.
His abilities would change in multiple ways. Firstly, his chakra control might be affected. Since Godzilla is a massive and powerful entity, it could disrupt Naruto's normal chakra flow. However, he could also learn to harness Godzilla's power within him. For example, he might be able to use Godzilla's raw strength to enhance his Sage Mode or even his Nine - Tails transformation. This could make him an even more formidable opponent. His speed could also be enhanced as Godzilla's power might give him a boost in his physical capabilities, allowing him to move faster and react quicker in battle.
You can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3). Just type in 'Naruto is Godzilla' in the search bar, and if there are any works with that theme, they should show up. However, the availability depends on whether someone has actually written and uploaded such a fanfiction.
In some Naruto and Fem Godzilla fanfictions, the Fem Godzilla could be a summon of a powerful new character. This new character, perhaps a rogue shinobi, uses Fem Godzilla to try and take over the ninja world. The story could then revolve around Naruto and his friends trying to stop this new threat.