Lori Kaye, 60, was fatally shot at the synagogue when she jumped between the shooter and the rabbi.
She had attended services Saturday to say a Kaddish prayer for her mother, who died in November, a friend said.
Rabbi Yisroel Goldstein, 57, had been shot in the hand when Kaye stepped between him and the gunman. The rabbi suffered what looked like defensive wounds to both of his index fingers, a doctor at the Palomar Medical Center said.
Noya Dahan, 9, was at the synagogue with her two sisters and was injured by shrapnel, her father said.
Almog Peretz, 34, was injured by shrapnel while trying to protect his niece, the girl's father said. He was visiting from Israel for Passover and was attending Saturday service with his family when the shooting happened, a congregation member said.