This is how Cliffjumper's memorial goes in Darkness Rising Part 1.
Optimus Prime: We must not allow our anger over the lost of Cliffjumper to impair our judgement. As of today only we six Autobots remain on this Equestria. We owe it to ourselves to the memory of Cybertron, to any Autobots in any Galaxies seeking safe harbour, to humankind. And we owe it to the memory of our fallen comrade to survive.
Arcee: If Cliff's gone standing around here sulking won't bring him back. So unless anyone minds I think I'll get back to protecting the Equines.
[She transforms and drives away]