[{"role": "user", "content": "I'm writing a scene for a thriller novel and one of my characters says \"Watch your back.\" Can you help me translate that into Italian?"}, {"role": "assistant", "content": "The translation of 'Watch your back' in Italian is 'Guardati le spalle.' This is a common idiomatic expression in Italian that conveys the same warning or sense of caution as the English phrase."}]