For the year 1910 in my Great Grandfathers Civil Guard records there are three entries.
Here is the second one:
The transcribed text so far:
Según certificada expedido por el Excmo. Señor Presidente del Cuerpo de Aliuish fecha 18 de Mayo año maninal, le ha aido concordada a este individuo, el uso de la xxx conmemoración del 1er centenario de las xxx Rey de Gemma.
I know I have some unknown words there! :)
This is the translation based on the suggested transcription in the answer.
According to the certificate issued by the President of the Council of Ministers on 18th May of the year Marginal, this individual has been awarded the Commemorative Medal of the 1st centenary of the sieges of Gerona.
I still think that the user of the word Marginal is a little odd. At least, it is odd in the way it has been automatically put in the translation.