Nidalee vs Lillia Jungle Matchup
Nidalee Jungle wins 46.3% of 661 Low Elo games against Lillia Jungle, +0.3 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
How to play as Nidalee
Do not chase Lillia around the jungle. Hold Javelin Toss(Q) around an objective or route to make her approach before you throw; if she gets the upper hand, use Pounce(W) over a nearby wall to disengage.
Dodge Swirlseed(E) before committing to a spear or close trade; if Lillia has the advantage, break off instead of chasing her through the jungle.
Javelin Toss(Q) gains damage with travel distance, while Swirlseed(E) slows its target on impact; both can start a jungle skirmish from range.
How to play as Lillia
If Nidalee starts taking over early skirmishes, do not force a fight after every gank. Keep your farm up and play for the later game; a high-elo Lillia one-trick describes Nidalee's ganks as stronger early and her impact as falling off later.
Sources
These notes come from r/NidaleeMains and r/LilliaMains, checked against the champions' abilities.