Aston Villa manager Steve Bruce hit out at Cardiff City's physical approach to Jack Grealish after their 1-0 defeat.
In their previous encounter, which Bruce's side won 2-1, Cardiff boss Neil Warnock complained that Grealish was trying to get his players booked.
"They have kicked him from pillar to post in both games," said Bruce.
"But Jack needs to learn not to react. We don't want players throwing arms in the air when they're tackled or think decisions have gone against them."
After Villa beat the Bluebirds on 26 November, Warnock said he was "disappointed" with Grealish's behaviour on the pitch.