These quotes come from the transformers 2007 game on PS2. Sorry if it doesn't match up with the last quote.

"This ends here." Optimus Prime
"This has to end, Megatron" Optimus (again)
"Heroic words, Optimus-pity they will be your last!" (Megatron...Really, they're HIS last words...These quotes are from The Ultimate Doom, the final mission in the autobot campaign.)
"Stannnd and FIGHT!" "YOUR death will be slow...." "Helicopters inbound!" (Ironhide, first two in the 'For The Fallen' mission and the last in the 'More Than Meets The Eye' starting cutscene)
"Hunt them down, hunt them down and DESTROY THEM ALL!" (Starscream, talking to Scorponok in 'Communication Breakdown'. Probably one of my favourite quotes from this game)
"Arise, decepticons! We have much to do!" (Megatron, in the hoover dam cutscene just after completing all missions in the first level)