prayer beads
Prayer beads or Rosaries are used by members of various religions such as Roman Catholicism (rosary), Orthodox Christianity (prayer rope, κομποσκοίνι, komboskini, Чётки, chotki) Islam (مسبحة misbaha), Hinduism माला, japa mala), Buddhism (数珠, shu-zhu, juzu, 念珠, nenju, 佛珠, fo-zhu ), Sikhism, and Bahá'í Faith to count the repetitions of prayers, chants or devotions. They may also be used for meditation, protection from negative energy, or for relaxation.
If the prayer beads are specifically Christian, tag rosary.