The red text effect says "Non vo' che più favelle" in Borderlands 3.

"Non vo' che più favelle" is a red text modifier on weapons in Borderlands 3

Weapon

Granted Effects

  • 25% chance to double damage as Incendiary

Reference

  • Is a quote from Dante's Inferno: 32:109
  • The flavor text is Italian and translates to: "I don't want any more favors."