Question

how was arjuna protected when karna shot an arrow​

Answer 1

Answer:

Krishna smiled and replied “Oh, Arjuna, remember, your chariot is protected by Hanuman at the top on your flag, Me as your charioteer in the front and by Sheshnag at its wheels, yet the whole chariot would still sway and displace whenever the valiant Karna hit us with his arrows”.

Answer 2

Lord Krishna saved Arjuna by letting the arrow on which the king of snakes ( Takshak ) was sitting to an ordinary soldier by bringing Arjuna's chariot to 1 side.