Does this quote by Martial really exist?

Question

On Wikipedia I came across a quote by Tacitus which says:

To ravage, to slaughter, to usurp under false titles, they call empire;
and where they make a desert, they call it peace.

From my school days I remember a very similar quote by Martial, but after more than two decades and some relocations my old textbook is lost. I wanted to find out about it, but on the internet there's no trace of it so I have to rely on my memories. I remember that the textbook said that Martial beside the Epigrams wrote a minor epic poem. In that poem a Barbarian chief before a battle with the Romans addressed his tribe and said:

They rape, they kill, they plunder, they burn
they leave a desert and they call it peace

Actually I prefer the supposed Martial's version, the translation has a stronger rhythm. Did he really write it? Is there any reference somewhere?

Answer 1

Tacitus's Agricola says, at the end of XXX:

XXX. "... Auferre, trucidare, rapere, falsis nominibus imperium; atque, ubi solitudinem faciunt, pacem appellant."

which is to say

To ravage, to slaughter, to usurp under false titles, they call empire; and where they make a desert, they call it peace.

It might be possible that Martial wrote something along the same lines, and that Tacitus borrowed Martial's simile, but Google has not helped me verify this.