when put lilith talisman, it give normal effects - m.def up e.t.c. but when put anakim talisman too, m.defense going back to normal and only p.defense increased. friend from russian server checked also this and said, that there effect from both talismans appears.
http://l2wiki.com/talisman_-_lilith no effect if equipped with talisman - anakim or talisman - seven signs