Saturn square Lilith (orb 1.2°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Saturn in Libra in House 8 brings discipline, constraint, endurance, and mastery into House 8 (sexuality, shared power, crisis, and invisible bonds), with Libra style (relationship, balance, negotiation, and sense of form); Lilith in Cancer in House 5 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 5 (creation, performance, and personal expression), with Cancer style (memory, protection, belonging, and family sensitivity).
Concrete friction: this aspect puts Saturn (discipline, constraint, endurance, and mastery) and Lilith (pure ideal, absolute demand, fascination, and refusal of compromise) into repeated friction: one can interrupt, inhibit, or provoke the other in concrete situations. House 8 (sexuality, shared power, crisis, and invisible bonds) is in friction with House 5 (creation, performance, and personal expression); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.