"Abracadabra is an incantation used as a magic word in stage magic tricks, and historically was believed to have healing powers. The word is thought to have its origin in the Aramaic language,....... Many consider that the word “Abracadabra” is actually a Hebrew phrase meaning..... “I create (A’bra) what (ca) I speak (dab’ra).” "[A]bracadabra comprises the abbreviated forms of the Hebrew words Ab (Father), Ben (Son) and Ruach (Holy Spirit)..."
From the Wikapedia
Also spelled 'Avra Ka Davara' in Aramaic