The text of this spell in Long Lost Friend and Egyptian Secrets is essentially identical.
From The Long Lost Friend:
To Extinguish Fire Without Water
Write the following words on each side of a plate, and throw it into the fire, and it will be extinguished forthwith:
S A T O R
A R E P O
T E N E T
O P E R A
R O T A S
The grimoires Romanus-Büchlein Egyptian Secrets of Albertus Magnus The Long Lost Friend lists this spell.