Just would like to know
>A Pokémon with Telepathy avoids all attacks used by its allies in Double and Triple Battles.
>This includes attacks with multiple targets (such as Discharge), as well as attacks exclusively targeting an ally with Telepathy (such as Thunderbolt).
Source: [Bulbapedia/ Telepathy]
Please keep in mind that it does not protect from status moves, like Teeter Dance.
Telepathy protects you from all ally attack for an unlimited amount of turns, not just one.