In الْجَرَسُ مَزَامِيرُ الشَّيْطَانِ, الْجَرَسُ is the subject (mubtadaʾ): what the statement concerns. مَزَامِيرُ الشَّيْطَانِ is the predicate (khabar): what is said about it.
مَزَامِيرُ is the first term of a possessive construction (muḍāf), and الشَّيْطَانِ is the second (muḍāf ilayh). The first word means “instruments”; together the phrase means “instruments of Satan.”
The next report, النِّسَاءُ حَبَائِلُ الشَّيْطَانِ, follows a similar structure. Recognizing it here helps the learner read the next text more accurately.