says…
Les Determiner Byzantins Proper noun essayent Verb d'empêcher la Determiner cavalerie Noun bulgare 
Adjective de les encercler ⭕ Verb , mais Coordinating conjunction leurs Determiner manœuvres Noun échouent Verb .
Determiner
Proper noun
Verb
Determiner
Noun
Adjective
⭕
Verb
Coordinating conjunction
Determiner
Noun
Verb
The Byzantines try to prevent the Bulgarian cavalry from surrounding them, but their maneuvers fail. The Byzantines try to prevent the Bulgarian cavalry from surrounding them, but their maneuvers fail.
Words and sentences
byzantins
masculine plural of byzantin
essayent
third-person plural present indicative/subjunctive of essayer
la
-
the (definite article)
cavalerie
cavalry
bulgare
-
Bulgarian, the Bulgarian language
de les
Alternative form of des, "of the", some
⭕
encercler
- circle (draw a circle round)
- ring round, circle round
- surround, encircle
leurs
plural of leur: their (used before a plural noun)
French 