Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praestĕs, ĭtis, comm. [2. praesto], in relig. lang., an epithet of deities, presiding, protecting; as subst., a protector, guardian, president, etc. (poet. and post-class.): praestitem in eādem significatione dicebant antiqui, quā nunc dicimus antistitem, Paul. ex Fest. p. 223 Müll.: praestitibus Laribus, Ov. F. 5, 129: versus Orphici Liberum εὐβουλῆα vocantes, boni consilii hunc deum praestitem monstrant, Macr. S. 1, 18; Mart. Cap. 2, 40: PRAESTITI JOVI, Inscr. Grut. 22, 1.