Reliance on vegetable protein sources has become an urgent necessity in Egypt due to the high prices of animal protein sources. This research was conducted to study the effect of different rates of mineral phosphate fertilizer with some phosphorous bio-fertilizers (Phosphorine and Microbene) on the productivity and quality of two faba bean cultivars Giza 843 and Masr3 in 2018/2019 and 2019/2020 winter seasons. The results revealed that a significant improvement could be found for most studied traits by the application of 30 kg P₂O₅/fad of phosphate fertilizer. Moreover, Phosphorine as a bio-fertilizer exhibited a significant enhancement on all studied traits, except shelling% and straw yield in the second season. The cultivars exerted different responses to the rates of phosphate fertilization for plant height, shelling% and protein content in the 2018/2019 season; number of branches/plant and 100 seed weight in the 2019/2020 season; as well as a noticeable response in seed and straw yields/fad, husk, and protein percentages in the two seasons. The interaction between cultivars and bio-fertilizers was significant for seeds protein and carbohydrates content in the 2019/2020 season. Furthermore, phosphate fertilizer rates and bi-fertilizers interaction gave a significant influence on seed yield/fad in both seasons and straw yield/fad in the first season. The second order interaction i.e., cultivars × phosphate × bio-fertilizers possessed a significant effect for seed and straw yields/fad, where the highest seed and straw yields were obtained from Masr1 cultivar when received 30 kg P₂O₅/fad and inoculated with Phosphorine biofertilizer in both seasons.