The Portugal star believes opponents are intentionally playing rough in order to knock the champions-elect off their stride
Manchester City's Bernardo Silva has called on referees to "do their job" and protect his team-mates from overly physical opponents.
The Premier League leaders swept West Brom aside at the Etihad Stadium on Wednesday to move 15 points clear at the top of the table, but their 3-0 victory came at a price.
David Silva was forced off with a suspected hip injury and both Kevin De Bruyne and Brahim Diaz were on the receiving end of robust tackles from James McClean and Matt Phillips respectively.