Rabbi Zalman Schachter-Shalomi, z”l, included his translation of Rabbi Yitsḥak Luria’s prayer “Hareni Moḥel” (I hereby forgive) in his Siddur Tehillat Hashem Yidaber Pi (2009). To the best of my ability, I have set his translation side-by-side with a transcription of the vocalized text of the prayer.

The prayer by the ARI z”l was first published in Ḥayim Vital’s Pri Ets Ḥayyim, Shaar Kriyat Shema al Hamitah, Pereq 2 (פרי עץ חיים, שער קריאת שמע שעל המיטה, פרק ב), and based on the statement of Reish Lakish in the Bavli Pesachim 66b and the practice of Mar Zutra attested in the Bavli Megillah 28a:

ריש לקיש אמר כל אדם שכועס אם חכם הוא חכמתו מסתלקת ממנו אם נביא הוא נבואתו מסתלקת ממנו אם חכם הוא חכמתו מסתלקת ממנו ממשה דכתיב ויקצוף משה על פקודי החיל וגו׳ וכתיב ויאמר אלעזר הכהן אל אנשי הצבא הבאים למלחמה זאת חקת התורה אשר צוה ה׳ את משה וגו׳ מכלל דמשה איעלם מיניה

Similarly, Reish Lakish said: Any person who becomes angry, if he is a Torah scholar, his wisdom departs from him, and if he is a prophet, his prophecy departs from him. The Gemara explains: That if he is a Torah scholar his wisdom departs from him is learned from Moshe, as it is written: “And Moshe became angry with the officers of the host, the captains over thousands and the captains over hundreds, who came from the battle” (Numbers 31:14). And what was his punishment? As it is written afterward: “And Elazar the priest said to the men of war who went to the battle: This is the statute of the law, which YHVH commanded Moshe” (Numbers 31:21), which proves by inference that this law had become hidden from Moshe due to his anger. (Pesachim 66b)

ולא עלתה על מטתי קללת חברי כי הא דמר זוטרא כי הוה סליק לפורייה אמר שרי ליה לכל מאן דצערן

Rabbi Neḥunya also said: Nor did I ever allow the resentment caused by my fellow’s curse to go up with me upon my bed. This is referring to conduct such as that of Mar Zutra. When he would go to bed at night, he would first say: “I forgive anyone who has vexed me.” (Megillah 28a)

Source(s)