Companions Who Never Were - Lynda Moss

The Doctor leaned back in his chair and grinned sheepishly. ‘I’m not often recognized.’
‘I’ve heard stories about you from an old Draconian business partner my father had. He called you Karshtakavaar, the oncoming storm. You appear only when there’s terrible danger, he said.’
— Paul Cornell, Love and War (1992)

The Tyler Family

FOURTH DOCTOR: Your weapons won’t work in here. We’re in a state of temporal grace. We’re multi-dimensional.
ELDRAD: What do you mean?
FOURTH DOCTOR: Well, in a sense, you see, we don’t exist while we’re in here. So you can’t hurt us, and we can’t hurt you.
— The Hand of Fear

NYSSA: And that’s another thing. The TARDIS used to be in a state of temporal grace, you said. Guns couldn’t be fired.
FIFTH DOCTOR: Yes. Well, nobody’s perfect.
— Arc of Infinity

ELEVENTH DOCTOR: You shot it! You shot my TARDIS! You shot the console!
MELS: It’s your fault!
ELEVENTH DOCTOR: How is it my fault!?
MELS: You said guns didn’t work in this place! You said we’re in a state of temporal grace!
ELEVENTH DOCTOR: Oh, that was a clever lie, you idiot! Anyone could’ve told that was a clever lie!
— Let’s Kill Hitler