From Halopedia, the Halo wiki
All Halo games besides those gross Halo Spartan Assault and Halo Spartan Strike.
Halo 2: Rtas 'Vadum's speech to the Special Operations Sangheili on the phantom heading to the Threshold Gas Mine to exterminate the Heretic threat.
Cortana's "death" (I cried so hardcore)
All who walk the blessed path will find salvation, even in death.
Out of darkness, these blades will light our way.
Glory and honor guide our ascension.
On the blood of our fathers, on the blood of our sons.
The true devotee honors our name with actions, not words.
Victory is secured not from the throne, but from the frontlines.
With this sacrament of blood we journey into the divine beyond.