The equal protection clause of the fourteenth amendment prohibits states from denying "any person within its jurisdiction the equal protection of the laws."

how does the language of the equal protection clause show intention to safeguard all groups' civil liberties?

The language is meant protect all citizens civil liberties. This is evident from the phrase "any person." Since it makes no mention of race, color, gender, religion, etc. it is supposed to protect all people. This was the ultimate goal of the 14th amendment, as it was put in place during the Reconstruction era to protect the civil liberties of newly freed African-American citizens.

pepin the short[a] (german: pippin der kurze, french: pépin le bref, c. 714 – 24 september 768) was the king of the franks from 751 until his death. he was the first of the carolingians to become king.[b][2]

the younger son of the frankish prince charles martel and his wife rotrude, pepin's upbringing was distinguished by the ecclesiastical education he had received from the monks of st. denis. succeeding his father as the mayor of the palace in 741, pepin reigned over francia jointly with his elder brother carloman. pepin ruled in neustria, burgundy, and provence, while his brother carloman established himself in austrasia, alemannia and thuringia. the brothers were active in suppressing revolts led by the bavarians, aquitanians, saxons, and the alemanni in the early years of their reign. in 743, they ended the frankish interregnum by choosing childeric iii, who was to be the last merovingian monarch, as figurehead king of the franks.