Nayru's Love

Nayru's Love is one of the three spells of the goddesses that you receive from the Great Fairies in The Legend of Zelda: Ocarina of Time. The other two spells are: Din's Fire and Farore's Wind. Using Nayru's Love will make a blue crystal-like shield appear around you. You won't take damage while Nayru's Love is working, but strong attacks will still knock you back. Ganon will still hurt you, though. While using it, you will be unable to use any other items that require magic.

How to get it

You don't get this until near the end of the game. After you have beaten the Shadow Temple and freed the Carpenters from the Gerudo Fortress, go through the gate into the desert. When you get through the desert, you will arrive at Desert Colossus. If you follow the wall on the right, you will find two palm trees. Bomb between them to reveal an entrance to the Great Fairy Fountain. Play Zelda's Lullaby on the Triforce symbol on the floor. The Great Fairy will appear and give you Nayru's Love. Voila!