For those who need it, here is the full dialogue
Arthas Menethil says: Father! Is it... over?
Terenas Menethil II says: At long last, no king rules forever, my son
Arthas Menethil says: I see... only darkness.. before... me
Terenas Menethil II says: Without its master's command, the restless scourge will become an even greater threat to this world.
Terenas Menethil II says: Control, must be maintained. There must always be.... a Lich King!
Highlord Tirion Fordring says: The weight, of such a burden, it must be mine, for there is no other.
Bolvar Fordragon yells: Tirion! You hold a grim destiny in your hands brother, but it is not your own!
Highlord Tirion Fordring says: Bolvar! By all that is holy...
Bolvar Fordragon says: The Dragon's flame sealed my fate, the world of the living, can no longer comfort me. Place the crown upon my head Tirion, forever more, I will be the jailer of the damned.
Highlord Tirion Fordring says: No old friend, I cannot...
Bolvar Fordragon says: Do it Tirion! You and these brave heroes have your own destinies to fulfil, this last act of service is mine.
Highlord Tirion Fordring says: You will not be forgotten brother...
Bolvar Fordragon yells: I must be forgotten Tirion, if the world is to live free from the Tyranny of fear, they must never know what was done here today.
Bolvar Fordragon says: Tell them only that the Lich King is dead
Bolvar Fordragon says: and that Bolvar Fordragon, died with him!
Bolvar Fordragon says: Now go! Leave this place and never return.