There is a segula from the Ramban for after lighting the Chanukah lights to say the verse from Psalms: "May the graciousness of the L·rd our G·d be upon us," (Psalms 90:17), repeating each word seven times. This is very good to do.
My Master, the Baal Shem Tov, told us to say both this Psalm and Psalm 91, "He who dwells in the covert of the Most High" seven times straight. He would also do so on the High Holy Days and in all times of trouble.
One should meditate on the two-letter nun's.
Reb Elimelech of Lizhensk and Chanukah Teachings
The Noam Elimelech addressed Chanukah in his discourses and writings, interpreting the essence of the holiday through the lens of Chassidic Torah, with emphasis on:
- "Chanu" - They rested on the 25th: The name Chanukah interpreted as "Israel rested from their enemies on the 25th of Kislev," but also as "chanu" from the language of encampment - a hint to a state of sanctification and elevation (the soul "encamps" in the body).
- Miracle of the oil - Internal miracle: The miracle wasn't only physical (oil for one day that lasted 8), but a symbol of internal revelation. The pure oil is the pure soul and the "vessel" (the body/the person), and it's possible to illuminate with "Divine light" (Torah and mitzvot) even when it appears insufficient, because H'shem fills what is lacking.
- Light of the candle as "Tzaddik": The candles light one another and symbolize the tzaddik who kindles light in the world, and through him the Divine light is revealed to all Israel (as described in his discourses that appear in the book).
- Victory of spirit: The battle with the Greeks is a spiritual battle. Chassidut emphasizes that even when the Jews appeared weak, they triumphed through faith, which is the "Shechina" appearing within the material world.
- Repair of the Temple: Chanukah is a time for "dedication of the altar" anew, repair of character traits, and transforming the person into a sanctuary. The tzaddik is the sanctified altar.
From essays from the Sefer Noam Elimelech