User blog comment:FairyRaven/Fairy Tail Chapter 369: The Place Prayers Reach, Review and Commentary/@comment-3424593-20140131121203/@comment-7418318-20140201160630

No, no author created meteors, since they are a natrual phenomenon. But someone had to use it as a magical spell for the first time. And that was neither Mashima, nor Kishimoto, nor Oda or any other still active Mangaka.

BUT as has been mentioned numerous times already, Mashima already created Sema (same name, almost same effect) more than 10 years ago in Rave Master, long before the concept was used in either Naruto or One Piece. No idea about Shaman King, Saint Seiya or JoJo's Bizarre Adventure though.