Candles are added to the hanukkiyah (menorah) from right to left but are kindled from left to right. The newest candle is lit first. (On the Shabbat of Hanukkah, kindle the Hanukkah lights first and then the Shabbat candles.)
Light the shamash (the helper candle) first, using it to kindle the rest of the Hanukkah lights. As you do, say or sing:
Baruch atah, Adonai Eloheinu, Melech haolam, asher kid’shanu b’mitzvotav v’tsivanu l’hadlik ner shel Hanukkah.
Baruch atah, Adonai Eloheinu, Melech haolam, she-asah nisim laavoteinu v’imoteinu bayamim hahaeim baz’man hazeh.
Baruch atah, Adonai Eloheinu, Melech haolam, shehecheyanu v'kiy'manu v'higiyanu laz'man hazeh.
We kindle these lights because of the wondrous deliverance You performed for our ancestors. During these eight days of Hanukkah, these lights are sacred; we are not to use them but only to behold them, so that their glow may rouse us to give thanks for Your wondrous acts of deliverance.