The 1955 elections saw Mizrachi and Hapoel HaMizrachi run as a combined bloc, the National Religious Front, which later became the National Religious Party (NRP). Shapira was reappointed Minister of Religions and Minister of Welfare. In 1957 he was seriously injured by a hand grenade thrown into the Knesset by Moshe Dwek, but survived. He and all other NRP ministers resigned from the cabinet in July 1958, marking the only spell he spent out of office during his time in Israel.