How did the companions defend the Prophet’s (PBUH) honor?

As Muslims, our faith is not complete if we do not hold the Prophet (PBUH), dearer to ourselves than our own selves, our parents, or anyone else. And when such a person who is so close to our hearts is insulted, it will naturally give rise to anger. Would we not feel angry if someone abused our mother in front of us, or tried to harm our child in our presence? If we felt no defensive or anger in such a situation, our sanity and love towards our close kin would be undoubtedly questioned!