Candlelight Blessing for Shabbos
After lighting the Shabbos Candles:
You are blessed, Lord our G-d, the sovereign of the world, who made us holy with His commandments and commanded us to kindle lights for Shabbos.
Candlelight Blessing for Yom Tov
You are blessed, Lord our G-d, the sovereign of the world, who made us holy with His commandments and commanded us to kindle lights for (Shabbos and for) the festival.