Names #35, #299 · Viṣṇu Sahasranāma
प्रभुःprabhuḥ
Prabhu — appears 2 times in the stotram, each with its own meaning
Name #35
The almighty lord
From shloka 4 · chapter Matsya
सर्वः शर्वः शिवः स्थाणुर्भूतादिर्निधिरव्ययः ।
सम्भवो भावनो भर्ता प्रभवः प्रभुरीश्वरः ॥
sarvaḥ śarvaḥ śivaḥ sthāṇurbhūtādirnidhiravyayaḥ
sambhavo bhāvano bhartā prabhavaḥ prabhurīśvaraḥ
Also in this shloka: sarvaḥ · śarvaḥ · śivaḥ · sthāṇuḥ · bhūtādiḥ · nidhiravyayaḥ · sambhavaḥ · bhāvanaḥ · bhartā · prabhavaḥ · īśvaraḥ
Name #299
The master of all
From shloka 32 · chapter Varāha
भूतभव्यभवन्नाथः पवनः पावनोऽनलः ।
कामहा कामकृत्कान्तः कामः कामप्रदः प्रभुः ॥
bhūtabhavyabhavannāthaḥ pavanaḥ pāvano'nalaḥ
kāmahā kāmakṛtkāntaḥ kāmaḥ kāmapradaḥ prabhuḥ
Also in this shloka: bhūtabhavyabhavannāthaḥ · pavanaḥ · pāvanaḥ · analaḥ · kāmahā · kāmakṛt · kāntaḥ · kāmaḥ · kāmapradaḥ