Saturn opposite Lilith (orb 0.8°) puts the two planets face to face, with visible back-and-forth or tension. The orb is extremely tight; this aspect is one of the chart's strongest signals.
Here, Saturn in Scorpio in House 12 brings discipline, constraint, endurance, and mastery into House 12 (retreat, contemplation, long time, and possible confinement), with Scorpio style (intensity, desire, crisis, secrecy, and invisible power); Lilith in Taurus in House 6 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 6 (daily work, technique, and bodily discipline), with Taurus style (nature, good food, physical sensuality, roots, resources, and perseverance).
Concrete conflict: this aspect sets Saturn (discipline, constraint, endurance, and mastery) across from Lilith (pure ideal, absolute demand, fascination, and refusal of compromise), with a back-and-forth that answers or contradicts itself. The house conflict is between House 12 (retreat, contemplation, long time, and possible confinement) and House 6 (daily work, technique, and bodily discipline); pressure in one field tends to reactivate the other.