If someone defames and disgraces you, that is simply the result of having criticized and dishonored others in the past, especially bodhisattvas. Instead of feeling angry with such people, you should feel grateful to them for giving you the opportunity to purify your past misdeeds.
In all circumstances, it is important to act in accordance with the teachings – but especially at such moments. What is the point of having received teachings if you do not apply them? Unfavorable circumstances are the best opportunity you will have to put the teachings into practice.
Dilgo Khyentse Rinpoche
from the book “The Heart of Compassion: The Thirty-seven Verses on the Practice of a Bodhisattva”