Repello Inimicum

Repello Inimigotum is a spell that protects a place from enemies.Disintergrates anything thats passes through it.In 1998, it was used many times to protect Hogwarts Castle.

Etymology
Latin "Repello", meaning "Push Back" and Portuguese "Inimigo", meaning "foe", "Enemy". Altogether this reads "push back the enemy".

Known uses

 * This spell was used by professors Filius Flitwick and Horace Slughorn along with Order of the Phoenix member Molly Weasley and another wizard (probably a professor) to protect Hogwarts Castle in 1998.

Behind the scenes

 * The true effect of this spell is unknown, though given the etymology it appears to repel enemies.

Appearances

 * Harry Potter and the Deathly Hallows: Part 2