Juventus coach Max Allegri admits victory over Sampdoria was a controversial affair.
Ronaldo scored a brace in Saturday's 2-1 victory over Sampdoria, including a penalty.
There were two debatable penalties for handball – one apiece – and a last-gasp Riccardo Saponara equaliser disallowed for a tight offside.
“We created many scoring opportunities against a very good Samp side," Allegri told Sky Sport Italia.
“After their penalty, we got a bit chaotic, but were back on track in the second half. Fortunately, that late Saponara goal was offside.
“We need to improve on keeping our calm when conceding, because otherwise we risk letting another goal in."