The name that is transliterated as «Phanuel» in English is translated in Libras (Brazilian Sign Language) with a sign that represents «face of God» (the meaning of his name). (Source: Missão Kophós )
«Phanuel» in Libras (source )
On the origin of the name see Genesis 32:30.
For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .