Dragon Ball Z Episode 105: Mighty Blast of Rage
Episode 105 of 291 of Dragon Ball Z, aired August 28, 1991, 25 minutes. Available with English subtitles and dub where released.
Episode summary
As Guru enjoys seeing his people alive on Earth, the time has come for him to go, but gave his powers to Moori, as the next Eldest Namek. Back on Namek, Frieza has been cut in half by his own energy disk from behind, but Goku, being the kind person he is, gives Frieza some of his power to escape. However, Frieza will not accept defeat, as he uses the given power to finish Goku off, but Goku finishes off Freiza with a mighty attack.