a scratch
It’s just a scratch.
Tres turnos en Nigeria, sin un rasguño.
Three matches in Nigeria, without a scratch.
— Avatar (2009)
Tu saco no tiene ni un rasguño.
Your jacket doesn't have a single scratch.
— Cuando pasan las cigüeñas (1957)
He/She hasn't suffered so much as a scratch.
— Ghost in the Shell (1995)