Final answer:
Phoenix's Run it Back ability in Valorant lasts for 10 seconds and can be extended by getting kills during its duration.
Step-by-step explanation:
Phoenix's Run it Back ability in the game Valorant lasts for 10 seconds.
Run it Back is an ultimate ability of the character Phoenix. When activated, Phoenix is respawned at his original location after being eliminated. During the duration of Run it Back, Phoenix is invulnerable to damage, and any kills he gets during this time extend the ability's duration by 2 seconds.
It is important to note that the duration of Run it Back can be influenced by the player's performance, as getting kills during the ability's duration can extend its time limit.