The Transformers: The Movie1986

[Perceptor analyzes Prime, who took much damage during the Autobot City siege]

Perceptor:
I fear the wounds are... fatal.

Daniel:
Prime, you can't die!

Optimus Prime:
Do not grieve. Soon... I will be one with the Matrix.

Hot Rod:
Prime...

Optimus:
Ultra Magnus. It is to you, old friend, that I shall pass the Matrix of Leadership, as it was... passed to me.

Ultra Magnus:
But Prime... I'm... I'm just a soldier. I'm not worthy.

Optimus:
Nor was I. But one day... an Autobot shall rise from our ranks... and use the power of the Matrix... to light... our darkest hour. [opens chest compartment to reveal the Matrix. Awed, the Autobots take a step back] Until the day...'til all are one. [tries to give the Matrix to Ultra Magnus, but it falls until Hot Rod catches it. Hot Rod gives the Matrix to Ultra Magnus, right before Optimus dies]