Trade a Rhydon while it's holding a Protector. You can find a Protector on Route 227.
not in this game
use the Pokemon modifier
Flygon, donphan or rypherior
Infernape Golduck Rypherior Sceptile Tyranitar Electivire
Yes, as long as one is male and one is female
You cannot get the protector to evolve Rhydon in Pokemon Red version, because Rhydon's ability to evolve with a protector into Rypherior is only available in the latest versions: Pokemon Diamond, Pearl, and Platinum. It is impossible to even get a protector in Pokemon Red version, let alone evolve Rhydon.
Pokemon diamond
If you mean chain breed, then you need to breed a move onto one pokemon, and breed that pokemon with the pokemon you want to have the move on. Say you want a torkoal to know skull bash, you need to breed a rypherior and bouffalant, rypherior needs to know the move skull bash, making sure the bouffalant is the male, then breed the baby bouffalant with a female torkoal to have a baby torkoal that knows skull bash. It seems like a lot of effort, but it's usually worth it, you can become unstoppable! You can do it with any pokemon other than feebas, you can even do it with magicarp, believe it or not, it can learn bounce! One of the best flying type moves!
Pokemon diamond Pokemon diamond Pokemon diamond
you cant be a Pokemon in Pokemon diamond
She is not in Pokemon diamond.
There is no Pokemon temple! There is such thing as Pokemon diamond.