Once you finally make it to the end of Nightshade, you have to deal with the evil mastermind who's responsible for starting the mess, Waldo P. Schmeer, a.k.a. Sutekh. He really likes to hear himself talk.

You can use this to your advantage. Before you engage him, TALK to him

to ask him the question you're probably asking yourself in real life.

Which he'll actually answer

Though, to be honest, I found the Staff of Ra to be all but useless when I was fighting him. A better technique was to duck in the center of the room and punch him when he teleports in close.