OSPF Loop-Free Alternate (LFA) Fast Reroute (FRR)

excuse but i don’t understand the following command what exactly do:
R1(config-router)#fast-reroute per-prefix tie-break node-protecting required index 5

you said:
Let’s enable node protecting and change the priority to the lowest value of all currently active tie breakers
and you show:

*>  5.5.5.5/32, Intra, cost 5, area 0
     SPF Instance 13, age 00:18:13
     Flags: RIB, HiPrio
      via 192.168.12.2, GigabitEthernet2 label 1048578
       Flags: RIB
       LSA: 1/5.5.5.5/5.5.5.5
      repair path via 192.168.14.4, GigabitEthernet4 label 1048578, cost 9
       Flags: RIB, Repair, IntfDj, BcastDj, NodeProt
       LSA: 1/5.5.5.5/5.5.5.5
      repair path via 192.168.13.3, GigabitEthernet3, cost 7
       Flags: Ignore, Repair, IntfDj, BcastDj, Downstr
       LSA: 1/5.5.5.5/5.5.5.5

the cost remain 9 for repair path via 192.168.14.4 and cost remain 7 for repair path via 192.168.13.3… i don’t understand