Chofetz Chaim חפץ חיים

And, especially, if by not telling the story, he will not suffer monetary loss, but only, cursing and reviling, it is certainly forbidden [to tell it], and he need not take any note of this at all, knowing in his soul that he will thereby be numbered among the lovers of the Blessed L–rd and his face will shine as the light of the sun, as Chazal have said (Yoma 23a): "Those who are shamed and do not shame [in return], who hear themselves reviled and do not answer, etc." — about them Scripture writes (Judges 5:31): '…and His lovers, like the rising of the sun in its might'" — how much more so, this one, who suffers humiliation for the mitzvoth of the L–rd. (viz. Hilchoth Lashon Hara, Principle I, section 6.)