Ashkenazim are not concerned for meat being unwatched for a few minutes as per the Ramah. I want to know do Sefardim have this concern? Meaning, in a work situation, when a Sefardi puts a meat sandwich in the company refrigerator, can they eat it?
If it is left in a place accessible by animals, such as a picnic table or a house with open windows, and the eater cannot recognize that this is his meat, and there is no seal, a Sepharadic Jew would generally refrain from eating such meat based on this Maran. In special cases, poskim are lenient.
EDIT: The Shulchan Aruch (63:1) rules, unlike the gemara referenced above, that we are also worried about non-Jews in terms of basar shenitalem min ha'ayin. The GR"A (S"K 1) says that this is based on the Rambam, who rules like the Yerushalmi in Shakalim 7:2 NOT on the Bavli I quoted above. This din can also clearly be seen in the Rambam Ma'achalot Asurot 8:10.
To reconclude, unless you can recognize your meat, there is some seal, or it is unlikely that a non-Jew had access, and is impossible that a wild animal had access, a Sepharadic Jew should refrain from eating it.