Hello there is a skript that can do like this example:
on inventory:
if name of event-item is "&5&lKIT SELECTOR":
send "&aPlayer didn't select a kit" to victim
disable damage
wait 1 minute
enable damage
on inventory:
if name of event-item is "&5&lKIT SELECTOR":
send "&aPlayer didn't select a kit" to victim
disable damage
wait 1 minute
enable damage