Nuclear Event in Ancient India
https://ancient-hebrew.org/ancientman/1054.html ?
edit: But also https://www.jasoncolavito.com/blog/the-radioactive-skeleton-...
Still, the few parts of the Mahabharata (which I've read(english translations of)) seem like Sci-Fi to me.
And then there is https://ge315.org/eze/1/the-celestial-chariot/ , https://en.wikipedia.org/wiki/Merkabah_mysticism , https://en.wikipedia.org/wiki/The_Spaceships_of_Ezekiel and so on.