Well, one idea could be that Naruto is somehow transported to ancient Egypt and gets involved with the Jackal Army. Maybe he uses his ninja skills to help them in a battle against an evil force that threatens both the ninja world and the Egyptian realm.
The Egyptian military culture is based on discipline and hierarchy. Naruto, with his free - spirited nature, could initially clash with this. However, his powerful abilities like the Sage Mode would make the soldiers respect him. His Sage Mode could be used to sense enemies from afar, which would be very useful in the vast deserts of Egypt. This could lead to a change in the military's approach to scouting and warfare, incorporating some of Naruto's more unorthodox methods.
Perhaps the Jackal Army is in search of a powerful artifact that was lost long ago. Naruto, with his skills in finding hidden things and his ability to overcome obstacles, joins them on their quest. Along the way, they face many challenges like traps in ancient tombs and battles with other mythical creatures. Naruto uses his shadow clones to solve some of the puzzles and his Rasengan to fight off enemies. The Jackal Army, on the other hand, uses their knowledge of Egyptian magic and their physical strength. As they get closer to the artifact, they realize that there is a greater conspiracy at play that involves a powerful ninja from Naruto's world who wants to use the artifact for his own evil purposes.
Perhaps there is a prophecy in the Egyptian world about a foreigner with great power coming to save them. Naruto fits this description. The Egyptian army initially doubts him but as they see his determination and skills, they start to trust him. Together, they embark on a journey to find a powerful artifact that could save both their lands from destruction, with Naruto using his speed and agility to overcome the various traps and obstacles along the way.
Well, in such fanfictions, the settings can also play a role in combining Naruto and Egyptian gods. The hidden villages in Naruto could be modeled after the temples or domains of the Egyptian gods. Konoha might be like a temple dedicated to a particular god, and the shinobi within it could be seen as the servants or protectors of that god - like power. Also, the jutsu in Naruto could be renamed or re - imagined to have an Egyptian god - related origin. For example, a fire - based jutsu could be called 'The Flames of Ra' in a fanfic.
Maybe he finds them during one of his adventures in a hidden temple. It could be that he stumbles upon a secret chamber where the cards are kept, perhaps while on a mission outside of Konoha.
Well, he might use his powerful jutsu like the Rasengan. He could also summon his toads to help him out in the battle against the army. Maybe he uses his shadow clone technique to confuse the enemy and then strike them when they're vulnerable.
Well, he might start by using his charisma. Naruto has always been good at making friends. He could reach out to old allies from his village, like Shikamaru and Choji. Also, he might convince some of the outcast ninja who have been mistreated in other villages to join him. His reputation as a hero who saved the world would surely attract a lot of people.
They might give him enhanced strength. Just like in the original concept of the Egyptian god cards having great power, in the fanfiction, Naruto could use this strength to defeat stronger opponents. For example, he could break through powerful jutsu barriers more easily.