You might say that this is another voicing for
F#sus4, and you'd be right. The chord name depends on your usage of the chord itself, like the key you are playing in or how you would like to remember the chord (if you're writing a song).
As C#7sus4:A string = C# (root note)
D string = F# (suspended 4th)
G string = B (dominant 7th)
B string = C# (root note)
As F#sus4 (or F#sus4/C#):A string = C# (perfect 5th)
D string = F# (root note)
G string = B (suspended 4th)
B string = C# (perfect 5th)
The more variations of both voicings and chord names that you know, the more bar bets you might win.