Anthony has been plotting to ruin Michael`s good reputation in the company. It`s time someone gave him a dose of his own medicine! (English Idioms, Oxfrord)
She's always turning up late for me so I thought I'd give her a taste of her own medicine and see how she likes it.(CIDI)
If Jim is sarcastic, give him a taste of his own medicine. (W.Magnuson, Eng.Idioms)