Result: — “ggold” looks like “gold” (maybe double g is typo? "tt" → "gg" in ROT13, so "ttbyq" = "ggold" indeed. If we fix "ggold" → "gold" (remove one g), maybe the phrase is "gold ? ?".
I notice "mhkr" — if ROT13 → not obvious. ttbyq msaryf mhkr
Let’s try :