^_^ allow me. *quickly gets on google and searches 'Till all are one'* found it. *reads it off*
"Till all are one" is a phrase knit through Transformers mythology and legend, often used as a rallying cry by the Autobots. It's been translated as either until the end of the Great War, when all Transformers shed their factional affiliations, or until all are rejoined into the Allspark of Primus.
That it is. And kinda sad at the same time. When you look at the WFC game, the Council says the phrase when Optimus told them Zeta Prime was dead. Though it gives me inspiration for one of my Oc's past! ^_^ hehe