In order to protect Trish from the Hitman Team, Bucciarati and crew's second mission from the boss was to go find a key in Pompei for some kind of vehicle that should aid them later on. Following orders, Giorno, Abbacchio, and Fugo head to Pompei to retrieve the key. When they get there, Fugo notices a suspicious shadow reflecting in a mirror that happened to be placed on one of the pillars there...
So you activated your Stand 
outside the mirror.
فعّلتَ الستاند الخاص بك خارج المرآة إذاً
Du hast also deinen Stand außerhalb
des Spiegels hervorgeholt.
Activaste tu Stand afuera del espejo.
Activaste tu Stand fuera del espejo.
Tu as activé ton Stand
hors du miroir.
Hai attivato il tuo Stand
al di fuori dello specchio.
Então você invocou seu 
Stand fora do espelho..
Ты привёл стенд в действие 
по ту сторону зеркала.