Turn 61:
after toxic damage suicune was at 64%
Snorlax Double-Edge vs. Suicune on a critical hit: 250-294 (62 - 72.9%)

Turn 86:
Snorlax was at 41%
Raikou Thunderbolt vs. Snorlax on a critical hit: 211-249 (40.3 - 47.6%)

Turn 119:
Umbreon was at 44%
Raikou Thunderbolt vs. Umbreon on a critical hit: 188-222 (47.8 - 56.4%)

Turn 125:
Raikou was at 34%
Raikou Thunderbolt vs. Raikou on a critical hit: 113-133 (29.5 - 34.7%)

Turn 130:
Snorlax was at 38%
+1 Skarmory Drill Peck vs. Snorlax on a critical hit: 291-342 (55.6 - 65.3%)

Turns 132-134:
Raikou switches into +2 Skarmory and has to sleep for 2 turns. If skarm crits 2 or more times, Raikou faints (although obviously if Raikou were crit twice in two attacks, Melle would probably switch out to save his Raikou). If skarm crits once then the cycle could be repeated if Iles were to choose to risk it.

Turn 197:
Snorlax is at 22%. If Skarm rolled Sleep Talk and got a max roll Drill Peck, depending on how PS handles percentages, it may have been able to KO. If SKarm rolled Sleep Talk and critical hit then it would have KO'd.
Skarmory Drill Peck vs. Snorlax: 97-115 (18.5 - 21.9%)

Turn 223:
Snorlax is at 35%. If it misses Lovely Kiss and Skarmory critical hits then Snorlax is KOd.

Turn 263-265:
Suicune switches into Snorlax's Double Edge and sleeps 2 turns. If Snorlax were to crit the first or second Double Edge then Suicune would not be able to stay in and wake up versus it. If it were to critical hit the third Double Edge, Suicune would be KOd. On Turn 266, Iles could have restarted the cycle but misclicked and hit Toxic instead.

Turn 288-289:
Suicune is at a HP where if it were critical hit on the first Double Edge, it would be forced to switch out. If Snorlax critical hit on the second Double Edge, Suicune would be KO'd.

Turn 345:
Skarmory is at 70%
Suicune Surf vs. Skarmory on a critical hit: 239-282 (71.7 - 84.6%)