What do we say when Yazid ibn Mu'awiyah is mentioned, and is it permissible to say "may Allah be pleased with him"?

Yazid ibn Mu'awiyah was not a Companion (Sahabi), and he committed grave actions for which scholars have ruled him to be a transgressor (fasiq). The preponderant view among scholars is to refrain from cursing him. We are inclined to neither invoke mercy upon him nor express satisfaction with him due to the grave matters he committed, and we entrust his affair to Allah Almighty.