Backwards language

There was an episode of UltraMan where they had a metal plate with a language on it that no one could decipher. Until one of the SSSP accidently dropped the plate on an overhead projector and it displayed backwards. It was actual Japanese, but because it was backwards no one could figure out what it said. sdrawkcab ylerem ,esenapaJ ni saw ti taht ezingocer dluoc eno on esuaceb daeh ym ni kcuts ti tub ,oga sraey siht was I
So does anyone know the episode name?