During this meditation you will be provided with suggestions for using the neutrality of breath awareness to notice the physical characteristics of aversion and relate to the unpleasantness with calmness and equanimity, disregarding whatever the mind creates to reject the experience.  This trains the mind to be aware of aversion in its many forms without being overwhelmed and controlled.  Another option for countering the effects of aversion is mentioned, the cultivation of metta, lovingkindness and karuna, compassion.